diff --git a/client/src/components/Collections/CollectionCreatorModal.vue b/client/src/components/Collections/CollectionCreatorModal.vue
index 278e25f3d70..334f6586e0d 100644
--- a/client/src/components/Collections/CollectionCreatorModal.vue
+++ b/client/src/components/Collections/CollectionCreatorModal.vue
@@ -260,9 +260,6 @@ function resetModal() {
         <BAlert v-else-if="!fromSelection && historyItemsError" variant="danger" show>
             {{ historyItemsError }}
         </BAlert>
-        <BAlert v-else-if="!creatorItems?.length" variant="info" show>
-            {{ localize("No items available to create a collection.") }}
-        </BAlert>
         <BAlert v-else-if="creatingCollection" variant="info" show>
             <LoadingSpan :message="localize('Creating collection')" />
         </BAlert>
@@ -289,7 +286,7 @@ function resetModal() {
         <ListCollectionCreator
             v-else-if="props.collectionType === 'list'"
             :history-id="props.historyId"
-            :initial-elements="creatorItems"
+            :initial-elements="creatorItems || []"
             :default-hide-source-items="props.defaultHideSourceItems"
             :from-selection="fromSelection"
             :extensions="props.extensions"
@@ -298,7 +295,7 @@ function resetModal() {
         <PairedListCollectionCreator
             v-else-if="props.collectionType === 'list:paired'"
             :history-id="props.historyId"
-            :initial-elements="creatorItems"
+            :initial-elements="creatorItems || []"
             :default-hide-source-items="props.defaultHideSourceItems"
             :from-selection="fromSelection"
             :extensions="props.extensions"
@@ -307,7 +304,7 @@ function resetModal() {
         <PairCollectionCreator
             v-else-if="props.collectionType === 'paired'"
             :history-id="props.historyId"
-            :initial-elements="creatorItems"
+            :initial-elements="creatorItems || []"
             :default-hide-source-items="props.defaultHideSourceItems"
             :from-selection="fromSelection"
             :extensions="props.extensions"
diff --git a/client/src/components/Collections/ListCollectionCreator.vue b/client/src/components/Collections/ListCollectionCreator.vue
index 9be7de5aae6..17324166aca 100644
--- a/client/src/components/Collections/ListCollectionCreator.vue
+++ b/client/src/components/Collections/ListCollectionCreator.vue
@@ -359,287 +359,273 @@ function renameElement(element: any, name: string) {
             </BAlert>
         </div>
         <div v-else>
-            <div v-if="noInitialElements">
+            <div v-if="fromSelection && returnInvalidElementsLength">
                 <BAlert show variant="warning" dismissible>
-                    {{ localize("No datasets were selected") }}
-                    {{ localize("At least one element is needed for the collection. You may need to") }}
-                    <a class="cancel-text" href="javascript:void(0)" role="button" @click="emit('on-cancel')">
-                        {{ localize("cancel") }}
-                    </a>
-                    {{ localize("and reselect new elements.") }}
-                </BAlert>
-
-                <div class="float-left">
-                    <button class="cancel-create btn" tabindex="-1" @click="emit('on-cancel')">
-                        {{ localize("Cancel") }}
-                    </button>
-                </div>
-            </div>
-            <div v-else-if="allElementsAreInvalid">
-                <BAlert v-if="!fromSelection" show variant="warning">
-                    {{
-                        localize(
-                            "No elements in your history are valid for this list. You may need to switch to a different history."
-                        )
-                    }}
-                    <span v-if="extensions?.length">
-                        {{ localize("The following extensions are required for this list: ") }}
-                        <ul>
-                            <li v-for="extension in extensions" :key="extension">
-                                {{ extension }}
-                            </li>
-                        </ul>
-                    </span>
-                </BAlert>
-                <BAlert v-else show variant="warning" dismissible>
                     {{ localize("The following selections could not be included due to problems:") }}
                     <ul>
                         <li v-for="problem in returnInvalidElements" :key="problem">
                             {{ problem }}
                         </li>
                     </ul>
-                    {{ localize("At least one element is needed for the collection. You may need to") }}
-                    <a class="cancel-text" href="javascript:void(0)" role="button" @click="emit('on-cancel')">
-                        {{ localize("cancel") }}
-                    </a>
-                    {{ localize("and reselect new elements.") }}
                 </BAlert>
-
-                <div class="float-left">
-                    <button class="cancel-create btn" tabindex="-1" @click="emit('on-cancel')">
-                        {{ localize("Cancel") }}
-                    </button>
-                </div>
             </div>
-            <div v-else>
-                <div v-if="fromSelection && returnInvalidElementsLength">
-                    <BAlert show variant="warning" dismissible>
-                        {{ localize("The following selections could not be included due to problems:") }}
-                        <ul>
-                            <li v-for="problem in returnInvalidElements" :key="problem">
-                                {{ problem }}
-                            </li>
-                        </ul>
-                    </BAlert>
-                </div>
 
-                <div v-if="showDuplicateError">
-                    <BAlert show variant="danger">
+            <div v-if="showDuplicateError">
+                <BAlert show variant="danger">
+                    {{
+                        localize("Collections cannot have duplicated names. The following list names are duplicated: ")
+                    }}
+                    <ol>
+                        <li v-for="name in duplicateNames" :key="name">{{ name }}</li>
+                    </ol>
+                    {{ localize("Please fix these duplicates and try again.") }}
+                </BAlert>
+            </div>
+
+            <CollectionCreator
+                :oncancel="() => emit('on-cancel')"
+                :history-id="props.historyId"
+                :hide-source-items="hideSourceItems"
+                :extensions="extensions"
+                :no-items="props.initialElements.length == 0 && !props.fromSelection"
+                @add-uploaded-files="addUploadedFiles"
+                @on-update-datatype-toggle="changeDatatypeFilter"
+                @onUpdateHideSourceItems="onUpdateHideSourceItems"
+                @clicked-create="clickedCreate">
+                <template v-slot:help-content>
+                    <!-- TODO: Update help content for case where `fromSelection` is false -->
+                    <p>
                         {{
                             localize(
-                                "Collections cannot have duplicated names. The following list names are duplicated: "
+                                [
+                                    "Collections of datasets are permanent, ordered lists of datasets that can be passed to tools ",
+                                    "and workflows in order to have analyses done on each member of the entire group. This interface allows ",
+                                    "you to create a collection and re-order the final collection.",
+                                ].join("")
                             )
                         }}
-                        <ol>
-                            <li v-for="name in duplicateNames" :key="name">{{ name }}</li>
-                        </ol>
-                        {{ localize("Please fix these duplicates and try again.") }}
-                    </BAlert>
-                </div>
+                    </p>
 
-                <CollectionCreator
-                    :oncancel="() => emit('on-cancel')"
-                    :history-id="props.historyId"
-                    :hide-source-items="hideSourceItems"
-                    :extensions="extensions"
-                    @add-uploaded-files="addUploadedFiles"
-                    @on-update-datatype-toggle="changeDatatypeFilter"
-                    @onUpdateHideSourceItems="onUpdateHideSourceItems"
-                    @clicked-create="clickedCreate">
-                    <template v-slot:help-content>
-                        <!-- TODO: Update help content for case where `fromSelection` is false -->
-                        <p>
-                            {{
-                                localize(
-                                    [
-                                        "Collections of datasets are permanent, ordered lists of datasets that can be passed to tools ",
-                                        "and workflows in order to have analyses done on each member of the entire group. This interface allows ",
-                                        "you to create a collection and re-order the final collection.",
-                                    ].join("")
-                                )
-                            }}
-                        </p>
-
-                        <ul>
-                            <li>
-                                {{ localize("Rename elements in the list by clicking on") }}
-                                <i data-target=".collection-element .name">
-                                    {{ localize("the existing name") }}
-                                </i>
-                                {{ localize(".") }}
-                            </li>
-
-                            <li>
-                                {{ localize("Discard elements from the final created list by clicking on the ") }}
-                                <i data-target=".collection-element .discard">
-                                    {{ localize("Discard") }}
-                                </i>
-                                {{ localize("button.") }}
-                            </li>
-
-                            <li>
-                                {{
-                                    localize(
-                                        "Reorder the list by clicking and dragging elements. Select multiple elements by clicking on"
-                                    )
-                                }}
-                                <i data-target=".collection-element">
-                                    {{ localize("them") }}
-                                </i>
-                                {{
-                                    localize(
-                                        "and you can then move those selected by dragging the entire group. Deselect them by clicking them again or by clicking the"
-                                    )
-                                }}
-                                <i data-target=".clear-selected">
-                                    {{ localize("Clear selected") }}
-                                </i>
-                                {{ localize("link.") }}
-                            </li>
-
-                            <li>
-                                {{ localize("Click ") }}
-                                <i data-target=".reset">
-                                    <FontAwesomeIcon :icon="faUndo" />
-                                </i>
-                                {{ localize("to begin again as if you had just opened the interface.") }}
-                            </li>
-
-                            <li>
-                                {{ localize("Click ") }}
-                                <i data-target=".sort-items">
-                                    <FontAwesomeIcon :icon="faSortAlphaDown" />
-                                </i>
-                                {{ localize("to sort datasets alphabetically.") }}
-                            </li>
-
-                            <li>
-                                {{ localize("Click the") }}
-                                <i data-target=".cancel-create">
-                                    {{ localize("Cancel") }}
-                                </i>
-                                {{ localize("button to exit the interface.") }}
-                            </li>
-                        </ul>
-
-                        <br />
-
-                        <p>
-                            {{ localize("Once your collection is complete, enter a ") }}
-                            <i data-target=".collection-name">
-                                {{ localize("name") }}
-                            </i>
-                            {{ localize("and click") }}
-                            <i data-target=".create-collection">
-                                {{ localize("Create list") }}
+                    <ul>
+                        <li>
+                            {{ localize("Rename elements in the list by clicking on") }}
+                            <i data-target=".collection-element .name">
+                                {{ localize("the existing name") }}
                             </i>
                             {{ localize(".") }}
-                        </p>
-                    </template>
+                        </li>
 
-                    <template v-slot:middle-content>
-                        <div v-if="fromSelection">
-                            <div class="collection-elements-controls">
-                                <div>
-                                    <BButton
-                                        class="reset"
-                                        :title="localize('Reset to original state')"
-                                        size="sm"
-                                        @click="reset">
-                                        <FontAwesomeIcon :icon="faUndo" fixed-width />
-                                        {{ localize("Reset") }}
-                                    </BButton>
-                                    <BButton
-                                        class="sort-items"
-                                        :title="localize('Sort datasets by name')"
-                                        size="sm"
-                                        @click="sortByName">
-                                        <FontAwesomeIcon :icon="faSortAlphaDown" />
-                                    </BButton>
-                                </div>
+                        <li>
+                            {{ localize("Discard elements from the final created list by clicking on the ") }}
+                            <i data-target=".collection-element .discard">
+                                {{ localize("Discard") }}
+                            </i>
+                            {{ localize("button.") }}
+                        </li>
 
-                                <div class="center-text">
-                                    <u>{{ workingElements.length }}</u> {{ localize("elements in list") }}
-                                </div>
+                        <li>
+                            {{
+                                localize(
+                                    "Reorder the list by clicking and dragging elements. Select multiple elements by clicking on"
+                                )
+                            }}
+                            <i data-target=".collection-element">
+                                {{ localize("them") }}
+                            </i>
+                            {{
+                                localize(
+                                    "and you can then move those selected by dragging the entire group. Deselect them by clicking them again or by clicking the"
+                                )
+                            }}
+                            <i data-target=".clear-selected">
+                                {{ localize("Clear selected") }}
+                            </i>
+                            {{ localize("link.") }}
+                        </li>
 
-                                <div>
-                                    <span v-if="atLeastOneDatasetIsSelected"
-                                        >{{ localize("For selection") }} ({{ selectedDatasetElements.length }}):</span
-                                    >
-                                    <BButtonGroup class="" size="sm">
-                                        <BButton
-                                            v-if="atLeastOneDatasetIsSelected"
-                                            :title="localize('Remove selected datasets from the list')"
-                                            @click="clickRemoveSelected">
-                                            <FontAwesomeIcon :icon="faMinus" fixed-width />
-                                            {{ localize("Remove") }}
-                                        </BButton>
-                                        <BButton
-                                            v-if="
-                                                !atLeastOneDatasetIsSelected ||
-                                                selectedDatasetElements.length < workingElements.length
-                                            "
-                                            :title="localize('Select all datasets')"
-                                            size="sm"
-                                            @click="clickSelectAll">
-                                            <FontAwesomeIcon :icon="faSquare" fixed-width />
-                                            {{ localize("Select all") }}
-                                        </BButton>
-                                        <BButton
-                                            v-if="atLeastOneDatasetIsSelected"
-                                            class="clear-selected"
-                                            :title="localize('De-select all selected datasets')"
-                                            @click="clickClearAll">
-                                            <FontAwesomeIcon :icon="faTimes" fixed-width />
-                                            {{ localize("Clear") }}
-                                        </BButton>
-                                    </BButtonGroup>
-                                </div>
+                        <li>
+                            {{ localize("Click ") }}
+                            <i data-target=".reset">
+                                <FontAwesomeIcon :icon="faUndo" />
+                            </i>
+                            {{ localize("to begin again as if you had just opened the interface.") }}
+                        </li>
+
+                        <li>
+                            {{ localize("Click ") }}
+                            <i data-target=".sort-items">
+                                <FontAwesomeIcon :icon="faSortAlphaDown" />
+                            </i>
+                            {{ localize("to sort datasets alphabetically.") }}
+                        </li>
+
+                        <li>
+                            {{ localize("Click the") }}
+                            <i data-target=".cancel-create">
+                                {{ localize("Cancel") }}
+                            </i>
+                            {{ localize("button to exit the interface.") }}
+                        </li>
+                    </ul>
+
+                    <br />
+
+                    <p>
+                        {{ localize("Once your collection is complete, enter a ") }}
+                        <i data-target=".collection-name">
+                            {{ localize("name") }}
+                        </i>
+                        {{ localize("and click") }}
+                        <i data-target=".create-collection">
+                            {{ localize("Create list") }}
+                        </i>
+                        {{ localize(".") }}
+                    </p>
+                </template>
+
+                <template v-slot:middle-content>
+                    <div v-if="noInitialElements">
+                        <BAlert show variant="warning" dismissible>
+                            {{ localize("No datasets were selected") }}
+                            {{ localize("At least one element is needed for the collection. You may need to") }}
+                            <a class="cancel-text" href="javascript:void(0)" role="button" @click="emit('on-cancel')">
+                                {{ localize("cancel") }}
+                            </a>
+                            {{ localize("and reselect new elements, or upload datasets.") }}
+                        </BAlert>
+                    </div>
+                    <div v-else-if="allElementsAreInvalid">
+                        <BAlert v-if="!fromSelection" show variant="warning">
+                            {{
+                                localize(
+                                    "No elements in your history are valid for this list. \
+                                    You may need to switch to a different history or upload valid datasets."
+                                )
+                            }}
+                            <div v-if="extensions?.length">
+                                {{ localize("The following extensions are required for this list: ") }}
+                                <ul>
+                                    <li v-for="extension in extensions" :key="extension">
+                                        {{ extension }}
+                                    </li>
+                                </ul>
+                            </div>
+                        </BAlert>
+                        <BAlert v-else show variant="warning" dismissible>
+                            {{ localize("The following selections could not be included due to problems:") }}
+                            <ul>
+                                <li v-for="problem in returnInvalidElements" :key="problem">
+                                    {{ problem }}
+                                </li>
+                            </ul>
+                            {{ localize("At least one element is needed for the collection. You may need to") }}
+                            <a class="cancel-text" href="javascript:void(0)" role="button" @click="emit('on-cancel')">
+                                {{ localize("cancel") }}
+                            </a>
+                            {{ localize("and reselect new elements, or upload valid datasets.") }}
+                        </BAlert>
+                    </div>
+                    <div v-else-if="fromSelection">
+                        <div class="collection-elements-controls">
+                            <div>
+                                <BButton
+                                    class="reset"
+                                    :title="localize('Reset to original state')"
+                                    size="sm"
+                                    @click="reset">
+                                    <FontAwesomeIcon :icon="faUndo" fixed-width />
+                                    {{ localize("Reset") }}
+                                </BButton>
+                                <BButton
+                                    class="sort-items"
+                                    :title="localize('Sort datasets by name')"
+                                    size="sm"
+                                    @click="sortByName">
+                                    <FontAwesomeIcon :icon="faSortAlphaDown" />
+                                </BButton>
                             </div>
 
-                            <div v-if="noMoreValidDatasets">
-                                <BAlert show variant="warning">
-                                    {{ localize("No elements left. Would you like to") }}
-                                    <a class="reset-text" href="javascript:void(0)" role="button" @click="reset">
-                                        {{ localize("start over") }}
-                                    </a>
-                                    ?
-                                </BAlert>
+                            <div class="center-text">
+                                <u>{{ workingElements.length }}</u> {{ localize("elements in list") }}
                             </div>
 
-                            <draggable
-                                v-model="workingElements"
-                                class="collection-elements scroll-container flex-row drop-zone"
-                                chosen-class="bg-secondary">
-                                <DatasetCollectionElementView
-                                    v-for="element in workingElements"
-                                    :key="element.id"
-                                    :class="{ selected: getSelectedDatasetElements.includes(element.id) }"
-                                    :element="element"
-                                    has-actions
-                                    :selected="getSelectedDatasetElements.includes(element.id)"
-                                    @element-is-selected="elementSelected"
-                                    @element-is-discarded="elementDiscarded"
-                                    @onRename="(name) => (element.name = name)" />
-                            </draggable>
+                            <div>
+                                <span v-if="atLeastOneDatasetIsSelected"
+                                    >{{ localize("For selection") }} ({{ selectedDatasetElements.length }}):</span
+                                >
+                                <BButtonGroup class="" size="sm">
+                                    <BButton
+                                        v-if="atLeastOneDatasetIsSelected"
+                                        :title="localize('Remove selected datasets from the list')"
+                                        @click="clickRemoveSelected">
+                                        <FontAwesomeIcon :icon="faMinus" fixed-width />
+                                        {{ localize("Remove") }}
+                                    </BButton>
+                                    <BButton
+                                        v-if="
+                                            !atLeastOneDatasetIsSelected ||
+                                            selectedDatasetElements.length < workingElements.length
+                                        "
+                                        :title="localize('Select all datasets')"
+                                        size="sm"
+                                        @click="clickSelectAll">
+                                        <FontAwesomeIcon :icon="faSquare" fixed-width />
+                                        {{ localize("Select all") }}
+                                    </BButton>
+                                    <BButton
+                                        v-if="atLeastOneDatasetIsSelected"
+                                        class="clear-selected"
+                                        :title="localize('De-select all selected datasets')"
+                                        @click="clickClearAll">
+                                        <FontAwesomeIcon :icon="faTimes" fixed-width />
+                                        {{ localize("Clear") }}
+                                    </BButton>
+                                </BButtonGroup>
+                            </div>
                         </div>
 
-                        <FormSelectMany
-                            v-else
-                            v-model="inListElements"
-                            maintain-selection-order
-                            :placeholder="localize('Filter datasets by name')"
-                            :options="workingElements.map((e) => ({ label: e.name || '', value: e }))">
-                            <template v-slot:label-area="{ value }">
-                                <DatasetCollectionElementView
-                                    class="w-100"
-                                    :element="value"
-                                    @onRename="(name) => renameElement(value, name)" />
-                            </template>
-                        </FormSelectMany>
-                    </template>
-                </CollectionCreator>
-            </div>
+                        <div v-if="noMoreValidDatasets">
+                            <BAlert show variant="warning">
+                                {{ localize("No elements left. Would you like to") }}
+                                <a class="reset-text" href="javascript:void(0)" role="button" @click="reset">
+                                    {{ localize("start over") }}
+                                </a>
+                                ?
+                            </BAlert>
+                        </div>
+
+                        <draggable
+                            v-model="workingElements"
+                            class="collection-elements scroll-container flex-row drop-zone"
+                            chosen-class="bg-secondary">
+                            <DatasetCollectionElementView
+                                v-for="element in workingElements"
+                                :key="element.id"
+                                :class="{ selected: getSelectedDatasetElements.includes(element.id) }"
+                                :element="element"
+                                has-actions
+                                :selected="getSelectedDatasetElements.includes(element.id)"
+                                @element-is-selected="elementSelected"
+                                @element-is-discarded="elementDiscarded"
+                                @onRename="(name) => (element.name = name)" />
+                        </draggable>
+                    </div>
+
+                    <FormSelectMany
+                        v-else
+                        v-model="inListElements"
+                        maintain-selection-order
+                        :placeholder="localize('Filter datasets by name')"
+                        :options="workingElements.map((e) => ({ label: e.name || '', value: e }))">
+                        <template v-slot:label-area="{ value }">
+                            <DatasetCollectionElementView
+                                class="w-100"
+                                :element="value"
+                                @onRename="(name) => renameElement(value, name)" />
+                        </template>
+                    </FormSelectMany>
+                </template>
+            </CollectionCreator>
         </div>
     </div>
 </template>
diff --git a/client/src/components/Collections/PairCollectionCreator.vue b/client/src/components/Collections/PairCollectionCreator.vue
index f7a9ab5f6d5..38ee98f530c 100644
--- a/client/src/components/Collections/PairCollectionCreator.vue
+++ b/client/src/components/Collections/PairCollectionCreator.vue
@@ -345,149 +345,133 @@ function _naiveStartingAndEndingLCS(s1: string, s2: string) {
             </BAlert>
         </div>
         <div v-else>
-            <div v-if="noElementsSelected">
+            <div v-if="fromSelection && invalidElements.length">
                 <BAlert show variant="warning" dismissible>
-                    {{ localize("No datasets were selected.") }}
-                    {{ localize("Exactly two elements needed for the collection. You may need to") }}
-                    <a class="cancel-text" href="javascript:void(0)" role="button" @click="emit('on-cancel')">
-                        {{ localize("cancel") }}
-                    </a>
-                    {{ localize("and reselect new elements.") }}
-                </BAlert>
-
-                <div class="float-left">
-                    <button class="cancel-create btn" tabindex="-1" @click="emit('on-cancel')">
-                        {{ localize("Cancel") }}
-                    </button>
-                </div>
-            </div>
-            <div v-else-if="allElementsAreInvalid">
-                <BAlert v-if="!fromSelection" show variant="warning">
-                    {{
-                        localize(
-                            "No elements in your history are valid for this pair. You may need to switch to a different history."
-                        )
-                    }}
-                    <span v-if="extensions?.length">
-                        {{ localize("The following extensions are required for this pair: ") }}
-                        <ul>
-                            <li v-for="extension in extensions" :key="extension">
-                                {{ extension }}
-                            </li>
-                        </ul>
-                    </span>
-                </BAlert>
-                <BAlert v-else show variant="warning" dismissible>
                     {{ localize("The following selections could not be included due to problems:") }}
                     <ul>
                         <li v-for="problem in invalidElements" :key="problem">
                             {{ problem }}
                         </li>
                     </ul>
-                    {{ localize("Exactly two elements needed for the collection. You may need to") }}
-                    <a class="cancel-text" href="javascript:void(0)" role="button" @click="emit('on-cancel')">
-                        {{ localize("cancel") }}
-                    </a>
-                    {{ localize("and reselect new elements.") }}
                 </BAlert>
-
-                <div class="float-left">
-                    <button class="cancel-create btn" tabindex="-1" @click="emit('on-cancel')">
-                        {{ localize("Cancel") }}
-                    </button>
-                </div>
             </div>
-            <div v-else>
-                <div v-if="fromSelection && invalidElements.length">
-                    <BAlert show variant="warning" dismissible>
-                        {{ localize("The following selections could not be included due to problems:") }}
-                        <ul>
-                            <li v-for="problem in invalidElements" :key="problem">
-                                {{ problem }}
-                            </li>
-                        </ul>
-                    </BAlert>
-                </div>
-                <div v-if="!exactlyTwoValidElements">
-                    <BAlert show variant="warning" dismissible>
-                        {{ localize("Exactly two elements are needed for the pair.") }}
-                        <span v-if="fromSelection">
-                            <a class="cancel-text" href="javascript:void(0)" role="button" @click="emit('on-cancel')">
-                                {{ localize("Cancel") }}
-                            </a>
-                            {{ localize("and reselect new elements.") }}
-                        </span>
-                    </BAlert>
-
-                    <div v-if="fromSelection" class="float-left">
-                        <button class="cancel-create btn" tabindex="-1" @click="emit('on-cancel')">
+            <div v-if="!exactlyTwoValidElements">
+                <BAlert show variant="warning" dismissible>
+                    {{ localize("Exactly two elements are needed for the pair.") }}
+                    <span v-if="fromSelection">
+                        <a class="cancel-text" href="javascript:void(0)" role="button" @click="emit('on-cancel')">
                             {{ localize("Cancel") }}
-                        </button>
-                    </div>
-                </div>
+                        </a>
+                        {{ localize("and reselect new elements.") }}
+                    </span>
+                </BAlert>
+            </div>
 
-                <CollectionCreator
-                    :oncancel="() => emit('on-cancel')"
-                    :history-id="props.historyId"
-                    :hide-source-items="hideSourceItems"
-                    :suggested-name="initialSuggestedName"
-                    :extensions="props.extensions"
-                    :extensions-toggle="removeExtensions"
-                    @add-uploaded-files="addUploadedFiles"
-                    @onUpdateHideSourceItems="onUpdateHideSourceItems"
-                    @clicked-create="clickedCreate"
-                    @remove-extensions-toggle="removeExtensionsToggle">
-                    <template v-slot:help-content>
-                        <!-- TODO: Update help content for case where `fromSelection` is false -->
-                        <p>
+            <CollectionCreator
+                :oncancel="() => emit('on-cancel')"
+                :history-id="props.historyId"
+                :hide-source-items="hideSourceItems"
+                :suggested-name="initialSuggestedName"
+                :extensions="props.extensions"
+                :extensions-toggle="removeExtensions"
+                :no-items="props.initialElements.length == 0 && !props.fromSelection"
+                @add-uploaded-files="addUploadedFiles"
+                @onUpdateHideSourceItems="onUpdateHideSourceItems"
+                @clicked-create="clickedCreate"
+                @remove-extensions-toggle="removeExtensionsToggle">
+                <template v-slot:help-content>
+                    <!-- TODO: Update help content for case where `fromSelection` is false -->
+                    <p>
+                        {{
+                            localize(
+                                [
+                                    "Pair collections are permanent collections containing two datasets: one forward and one reverse. ",
+                                    "Often these are forward and reverse reads. The pair collections can be passed to tools and workflows in ",
+                                    "order to have analyses done on both datasets. This interface allows you to create a pair, name it, and ",
+                                    "swap which is forward and which reverse.",
+                                ].join("")
+                            )
+                        }}
+                    </p>
+
+                    <ul>
+                        <li>
+                            {{ localize("Click the ") }}
+                            <i data-target=".swap">
+                                {{ localize("Swap") }}
+                            </i>
                             {{
                                 localize(
-                                    [
-                                        "Pair collections are permanent collections containing two datasets: one forward and one reverse. ",
-                                        "Often these are forward and reverse reads. The pair collections can be passed to tools and workflows in ",
-                                        "order to have analyses done on both datasets. This interface allows you to create a pair, name it, and ",
-                                        "swap which is forward and which reverse.",
-                                    ].join("")
+                                    "link to make your forward dataset the reverse and the reverse dataset forward"
                                 )
                             }}
-                        </p>
+                        </li>
 
-                        <ul>
-                            <li>
-                                {{ localize("Click the ") }}
-                                <i data-target=".swap">
-                                    {{ localize("Swap") }}
-                                </i>
-                                {{
-                                    localize(
-                                        "link to make your forward dataset the reverse and the reverse dataset forward"
-                                    )
-                                }}
-                            </li>
-
-                            <li>
-                                {{ localize("Click the ") }}
-                                <i data-target=".cancel-create">
-                                    {{ localize("Cancel") }}
-                                </i>
-                                {{ localize("button to exit the interface.") }}
-                            </li>
-                        </ul>
-
-                        <br />
-
-                        <p>
-                            {{ localize("Once your collection is complete, enter a ") }}
-                            <i data-target=".collection-name"> {{ localize("name") }}</i>
-                            {{ localize("and click ") }}
-                            <i data-target=".create-collection">
-                                {{ localize("Create list") }}
+                        <li>
+                            {{ localize("Click the ") }}
+                            <i data-target=".cancel-create">
+                                {{ localize("Cancel") }}
                             </i>
-                            {{ localize(".") }}
-                        </p>
-                    </template>
+                            {{ localize("button to exit the interface.") }}
+                        </li>
+                    </ul>
 
-                    <template v-slot:middle-content>
+                    <br />
+
+                    <p>
+                        {{ localize("Once your collection is complete, enter a ") }}
+                        <i data-target=".collection-name"> {{ localize("name") }}</i>
+                        {{ localize("and click ") }}
+                        <i data-target=".create-collection">
+                            {{ localize("Create list") }}
+                        </i>
+                        {{ localize(".") }}
+                    </p>
+                </template>
+
+                <template v-slot:middle-content>
+                    <div v-if="noElementsSelected">
+                        <BAlert show variant="warning" dismissible>
+                            {{ localize("No datasets were selected.") }}
+                            {{ localize("Exactly two elements needed for the collection. You may need to") }}
+                            <a class="cancel-text" href="javascript:void(0)" role="button" @click="emit('on-cancel')">
+                                {{ localize("cancel") }}
+                            </a>
+                            {{ localize("and reselect new elements, or upload datasets.") }}
+                        </BAlert>
+                    </div>
+                    <div v-else-if="allElementsAreInvalid">
+                        <BAlert v-if="!fromSelection" show variant="warning">
+                            {{
+                                localize(
+                                    "No elements in your history are valid for this pair. \
+                                    You may need to switch to a different history or upload valid datasets."
+                                )
+                            }}
+                            <div v-if="extensions?.length">
+                                {{ localize("The following extensions are required for this pair: ") }}
+                                <ul>
+                                    <li v-for="extension in extensions" :key="extension">
+                                        {{ extension }}
+                                    </li>
+                                </ul>
+                            </div>
+                        </BAlert>
+                        <BAlert v-else show variant="warning" dismissible>
+                            {{ localize("The following selections could not be included due to problems:") }}
+                            <ul>
+                                <li v-for="problem in invalidElements" :key="problem">
+                                    {{ problem }}
+                                </li>
+                            </ul>
+                            {{ localize("Exactly two elements needed for the collection. You may need to") }}
+                            <a class="cancel-text" href="javascript:void(0)" role="button" @click="emit('on-cancel')">
+                                {{ localize("cancel") }}
+                            </a>
+                            {{ localize("and reselect new elements, or upload datasets.") }}
+                        </BAlert>
+                    </div>
+                    <div v-else>
                         <div class="collection-elements-controls">
                             <BButton
                                 class="swap"
@@ -531,9 +515,9 @@ function _naiveStartingAndEndingLCS(s1: string, s2: string) {
                                     @onRename="(name) => (element.name = name)" />
                             </div>
                         </div>
-                    </template>
-                </CollectionCreator>
-            </div>
+                    </div>
+                </template>
+            </CollectionCreator>
         </div>
     </div>
 </template>
diff --git a/client/src/components/Collections/PairedListCollectionCreator.vue b/client/src/components/Collections/PairedListCollectionCreator.vue
index d6e0f385aec..86e4914cb19 100644
--- a/client/src/components/Collections/PairedListCollectionCreator.vue
+++ b/client/src/components/Collections/PairedListCollectionCreator.vue
@@ -64,7 +64,7 @@ const emit = defineEmits<{
 const noElementsHeader = props.fromSelection ? localize("No elements selected") : localize("No elements available");
 const allInvalidElementsPartTwo = props.fromSelection
     ? localize("and reselect new elements.")
-    : localize("and change your current history or add valid datasets for this collection.");
+    : localize("and change your current history or upload valid datasets for this collection.");
 
 // Flags
 const state = ref<"build" | "error" | "duplicates">("build");
@@ -817,261 +817,245 @@ function _naiveStartingAndEndingLCS(s1: string, s2: string) {
             </BAlert>
         </div>
         <div v-else>
-            <div v-if="noElementsSelected">
+            <div v-if="fromSelection && returnInvalidElementsLength">
                 <BAlert show variant="warning" dismissible>
-                    {{ noElementsHeader }}
-                    {{ ALL_INVALID_ELEMENTS_PART_ONE }}
-                    <a class="cancel-text" href="javascript:void(0)" role="button" @click="emit('on-cancel')">
-                        {{ CANCEL_TEXT }}
-                    </a>
-                    {{ allInvalidElementsPartTwo }}
-                </BAlert>
-                <div class="float-left">
-                    <button class="cancel-create btn" tabindex="-1" @click="emit('on-cancel')">
-                        {{ CANCEL_TEXT }}
-                    </button>
-                </div>
-            </div>
-            <div v-else-if="allElementsAreInvalid">
-                <BAlert v-if="!fromSelection" show variant="warning">
-                    {{
-                        localize(
-                            "No elements in your history are valid for this collection. You may need to switch to a different history."
-                        )
-                    }}
-                    <span v-if="extensions?.length">
-                        {{ localize("The following extensions are required for this collection: ") }}
-                        <ul>
-                            <li v-for="extension in extensions" :key="extension">
-                                {{ extension }}
-                            </li>
-                        </ul>
-                    </span>
-                </BAlert>
-                <BAlert v-else show variant="warning" dismissible>
                     {{ INVALID_HEADER }}
                     <ul>
                         <li v-for="problem in returnInvalidElements" :key="problem">
                             {{ problem }}
                         </li>
                     </ul>
-                    {{ ALL_INVALID_ELEMENTS_PART_ONE }}
-                    <a class="cancel-text" href="javascript:void(0)" role="button" @click="emit('on-cancel')">
-                        {{ CANCEL_TEXT }}
-                    </a>
-                    {{ allInvalidElementsPartTwo }}
                 </BAlert>
-                <div class="float-left">
-                    <button class="cancel-create btn" tabindex="-1" @click="emit('on-cancel')">
-                        {{ CANCEL_TEXT }}
-                    </button>
-                </div>
             </div>
-            <div v-else-if="tooFewElementsSelected">
-                <div v-if="returnInvalidElementsLength">
-                    <BAlert show variant="warning" dismissible>
-                        {{ INVALID_HEADER }}
-                        <ul>
-                            <li v-for="problem in returnInvalidElements" :key="problem">
-                                {{ problem }}
-                            </li>
-                        </ul>
-                    </BAlert>
-                </div>
-                <BAlert show variant="warning" dismissible>
-                    {{ ALL_INVALID_ELEMENTS_PART_ONE }}
-                    <a class="cancel-text" href="javascript:void(0)" role="button" @click="emit('on-cancel')">
-                        {{ CANCEL_TEXT }}
-                    </a>
-                    {{ allInvalidElementsPartTwo }}
+            <div v-if="!autoPairsPossible">
+                <BAlert show variant="danger" dismissible @dismissed="autoPairsPossible = true">
+                    {{
+                        localize(
+                            "Could not automatically create any pairs from the given dataset names. You may want to choose or enter different filters and try auto-pairing again."
+                        )
+                    }}
+                    <span v-if="fromSelection">
+                        <a class="cancel-text" href="javascript:void(0)" role="button" @click="emit('on-cancel')">
+                            {{ CANCEL_TEXT }}
+                        </a>
+                        {{ allInvalidElementsPartTwo }}
+                    </span>
                 </BAlert>
-                <div class="float-left">
-                    <button class="cancel-create btn" tabindex="-1" @click="emit('on-cancel')">
-                        {{ CANCEL_TEXT }}
-                    </button>
-                </div>
             </div>
-            <div v-else>
-                <div v-if="fromSelection && returnInvalidElementsLength">
-                    <BAlert show variant="warning" dismissible>
-                        {{ INVALID_HEADER }}
-                        <ul>
-                            <li v-for="problem in returnInvalidElements" :key="problem">
-                                {{ problem }}
-                            </li>
-                        </ul>
-                    </BAlert>
-                </div>
-                <div v-if="!autoPairsPossible">
-                    <BAlert show variant="danger" dismissible @dismissed="autoPairsPossible = true">
+            <div v-if="state == 'duplicates'">
+                <BAlert show variant="danger">
+                    {{
+                        localize("Collections cannot have duplicated names. The following list names are duplicated: ")
+                    }}
+                    <ul>
+                        <li v-for="name in duplicatePairNames" :key="name">{{ name }}</li>
+                    </ul>
+                    {{ localize("Please fix these duplicates and try again.") }}
+                </BAlert>
+            </div>
+            <CollectionCreator
+                :oncancel="() => emit('on-cancel')"
+                :history-id="props.historyId"
+                :hide-source-items="hideSourceItems"
+                render-extensions-toggle
+                :extensions-toggle="removeExtensions"
+                :extensions="extensions"
+                :no-items="props.initialElements.length == 0 && !props.fromSelection"
+                @add-uploaded-files="addUploadedFiles"
+                @onUpdateHideSourceItems="hideSourceItems = $event"
+                @clicked-create="clickedCreate"
+                @remove-extensions-toggle="removeExtensionsToggle">
+                <template v-slot:help-content>
+                    <!-- TODO: Update help content for case where `fromSelection` is false -->
+                    <p>
                         {{
                             localize(
-                                "Could not automatically create any pairs from the given dataset names. You may want to choose or enter different filters and try auto-pairing again."
+                                [
+                                    "Collections of paired datasets are ordered lists of dataset pairs (often forward and reverse reads). ",
+                                    "These collections can be passed to tools and workflows in order to have analyses done on each member of ",
+                                    "the entire group. This interface allows you to create a collection, choose which datasets are paired, ",
+                                    "and re-order the final collection.",
+                                ].join("")
                             )
                         }}
-                        <span v-if="fromSelection">
+                    </p>
+                    <p>
+                        {{ localize("Unpaired datasets are shown in the") }}
+                        <i data-target=".unpaired-columns">
+                            {{ localize("unpaired section") }}
+                        </i>
+                        {{ "." }}
+                        {{ localize("Paired datasets are shown in the") }}
+                        <i data-target=".paired-columns">
+                            {{ localize("paired section") }}
+                        </i>
+                        {{ "." }}
+                    </p>
+                    <ul>
+                        {{
+                            localize("To pair datasets, you can:")
+                        }}
+                        <li>
+                            {{ localize("Click a dataset in the") }}
+                            <i data-target=".forward-column">
+                                {{ localize("forward column") }}
+                            </i>
+                            {{ localize("to select it then click a dataset in the") }}
+                            <i data-target=".reverse-column">
+                                {{ localize("reverse column") }}
+                            </i>
+                        </li>
+                        <li>
+                            {{
+                                localize(
+                                    "Click one of the Pair these datasets buttons in the middle column to pair the datasets in a particular row."
+                                )
+                            }}
+                        </li>
+                        <li>
+                            {{ localize("Click") }}
+                            <i data-target=".autopair-link">
+                                {{ localize("Auto-pair") }}
+                            </i>
+                            {{ localize("to have your datasets automatically paired based on name.") }}
+                        </li>
+                    </ul>
+                    <ul>
+                        {{
+                            localize("You can filter what is shown in the unpaired sections by:")
+                        }}
+                        <li>
+                            {{ localize("Entering partial dataset names in either the ") }}
+                            <i data-target=".forward-unpaired-filter input">
+                                {{ localize("forward filter") }}
+                            </i>
+                            {{ localize("or ") }}
+                            <i data-target=".reverse-unpaired-filter input">
+                                {{ localize("reverse filter") }}
+                            </i>
+                            {{ "." }}
+                        </li>
+                        <li>
+                            {{
+                                localize(
+                                    "Choosing from a list of preset filters by clicking the arrow beside the filter input."
+                                )
+                            }}
+                        </li>
+                        <li>
+                            {{ localize("Entering regular expressions to match dataset names. See:") }}
+                            <a
+                                href="https://developer.mozilla.org/en-US/docs/Web/JavaScript/Guide/Regular_Expressions"
+                                target="_blank">
+                                {{ localize("MDN's JavaScript Regular Expression Tutorial") }}</a
+                            >
+                            {{ localize("Note: forward slashes (\\) are not needed.") }}
+                        </li>
+                        <li>
+                            {{ localize("Clearing the filters by clicking the ") }}
+                            <i data-target=".clear-filters-link">
+                                {{ localize("Clear filters link") }}
+                            </i>
+                            {{ "." }}
+                        </li>
+                    </ul>
+                    <p>
+                        {{ localize("To unpair individual dataset pairs, click the ") }}
+                        <i data-target=".unpair-btn">
+                            {{ localize("unpair buttons (") }}
+                            <span class="fa fa-unlink"></span>
+                            {{ ")" }}
+                        </i>
+                        {{ localize("Click the") }}
+                        <i data-target=".unpair-all-link">
+                            {{ localize("Unpair all") }}
+                        </i>
+                        {{ localize("link to unpair all pairs.") }}
+                    </p>
+                    <p>
+                        {{
+                            localize(
+                                'You can include or remove the file extensions (e.g. ".fastq") from your pair names by toggling the'
+                            )
+                        }}
+                        <i data-target=".remove-extensions-prompt">
+                            {{ localize("Remove file extensions from pair names?") }}
+                        </i>
+                        {{ localize("control.") }}
+                    </p>
+                    <p>
+                        {{ localize("Once your collection is complete, enter a") }}
+                        <i data-target=".collection-name">
+                            {{ localize("name") }}
+                        </i>
+                        {{ localize("and click ") }}
+                        <i data-target=".create-collection">
+                            {{ localize("Create list") }}
+                        </i>
+                        {{ localize(". (Note: you do not have to pair all unpaired datasets to finish.)") }}
+                    </p>
+                </template>
+                <template v-slot:middle-content>
+                    <div v-if="noElementsSelected">
+                        <BAlert show variant="warning" dismissible>
+                            {{ noElementsHeader }}
+                            {{ ALL_INVALID_ELEMENTS_PART_ONE }}
                             <a class="cancel-text" href="javascript:void(0)" role="button" @click="emit('on-cancel')">
                                 {{ CANCEL_TEXT }}
                             </a>
                             {{ allInvalidElementsPartTwo }}
-                        </span>
-                    </BAlert>
-                </div>
-                <div v-if="state == 'duplicates'">
-                    <BAlert show variant="danger">
-                        {{
-                            localize(
-                                "Collections cannot have duplicated names. The following list names are duplicated: "
-                            )
-                        }}
-                        <ul>
-                            <li v-for="name in duplicatePairNames" :key="name">{{ name }}</li>
-                        </ul>
-                        {{ localize("Please fix these duplicates and try again.") }}
-                    </BAlert>
-                </div>
-                <CollectionCreator
-                    :oncancel="() => emit('on-cancel')"
-                    :history-id="props.historyId"
-                    :hide-source-items="hideSourceItems"
-                    render-extensions-toggle
-                    :extensions-toggle="removeExtensions"
-                    :extensions="extensions"
-                    @add-uploaded-files="addUploadedFiles"
-                    @onUpdateHideSourceItems="hideSourceItems = $event"
-                    @clicked-create="clickedCreate"
-                    @remove-extensions-toggle="removeExtensionsToggle">
-                    <template v-slot:help-content>
-                        <!-- TODO: Update help content for case where `fromSelection` is false -->
-                        <p>
+                        </BAlert>
+                    </div>
+                    <div v-else-if="allElementsAreInvalid">
+                        <BAlert v-if="!fromSelection" show variant="warning">
                             {{
                                 localize(
-                                    [
-                                        "Collections of paired datasets are ordered lists of dataset pairs (often forward and reverse reads). ",
-                                        "These collections can be passed to tools and workflows in order to have analyses done on each member of ",
-                                        "the entire group. This interface allows you to create a collection, choose which datasets are paired, ",
-                                        "and re-order the final collection.",
-                                    ].join("")
+                                    "No elements in your history are valid for this collection. You may need to switch to a different history."
                                 )
                             }}
-                        </p>
-                        <p>
-                            {{ localize("Unpaired datasets are shown in the") }}
-                            <i data-target=".unpaired-columns">
-                                {{ localize("unpaired section") }}
-                            </i>
-                            {{ "." }}
-                            {{ localize("Paired datasets are shown in the") }}
-                            <i data-target=".paired-columns">
-                                {{ localize("paired section") }}
-                            </i>
-                            {{ "." }}
-                        </p>
-                        <ul>
-                            {{
-                                localize("To pair datasets, you can:")
-                            }}
-                            <li>
-                                {{ localize("Click a dataset in the") }}
-                                <i data-target=".forward-column">
-                                    {{ localize("forward column") }}
-                                </i>
-                                {{ localize("to select it then click a dataset in the") }}
-                                <i data-target=".reverse-column">
-                                    {{ localize("reverse column") }}
-                                </i>
-                            </li>
-                            <li>
-                                {{
-                                    localize(
-                                        "Click one of the Pair these datasets buttons in the middle column to pair the datasets in a particular row."
-                                    )
-                                }}
-                            </li>
-                            <li>
-                                {{ localize("Click") }}
-                                <i data-target=".autopair-link">
-                                    {{ localize("Auto-pair") }}
-                                </i>
-                                {{ localize("to have your datasets automatically paired based on name.") }}
-                            </li>
-                        </ul>
-                        <ul>
-                            {{
-                                localize("You can filter what is shown in the unpaired sections by:")
-                            }}
-                            <li>
-                                {{ localize("Entering partial dataset names in either the ") }}
-                                <i data-target=".forward-unpaired-filter input">
-                                    {{ localize("forward filter") }}
-                                </i>
-                                {{ localize("or ") }}
-                                <i data-target=".reverse-unpaired-filter input">
-                                    {{ localize("reverse filter") }}
-                                </i>
-                                {{ "." }}
-                            </li>
-                            <li>
-                                {{
-                                    localize(
-                                        "Choosing from a list of preset filters by clicking the arrow beside the filter input."
-                                    )
-                                }}
-                            </li>
-                            <li>
-                                {{ localize("Entering regular expressions to match dataset names. See:") }}
-                                <a
-                                    href="https://developer.mozilla.org/en-US/docs/Web/JavaScript/Guide/Regular_Expressions"
-                                    target="_blank">
-                                    {{ localize("MDN's JavaScript Regular Expression Tutorial") }}</a
-                                >
-                                {{ localize("Note: forward slashes (\\) are not needed.") }}
-                            </li>
-                            <li>
-                                {{ localize("Clearing the filters by clicking the ") }}
-                                <i data-target=".clear-filters-link">
-                                    {{ localize("Clear filters link") }}
-                                </i>
-                                {{ "." }}
-                            </li>
-                        </ul>
-                        <p>
-                            {{ localize("To unpair individual dataset pairs, click the ") }}
-                            <i data-target=".unpair-btn">
-                                {{ localize("unpair buttons (") }}
-                                <span class="fa fa-unlink"></span>
-                                {{ ")" }}
-                            </i>
-                            {{ localize("Click the") }}
-                            <i data-target=".unpair-all-link">
-                                {{ localize("Unpair all") }}
-                            </i>
-                            {{ localize("link to unpair all pairs.") }}
-                        </p>
-                        <p>
-                            {{
-                                localize(
-                                    'You can include or remove the file extensions (e.g. ".fastq") from your pair names by toggling the'
-                                )
-                            }}
-                            <i data-target=".remove-extensions-prompt">
-                                {{ localize("Remove file extensions from pair names?") }}
-                            </i>
-                            {{ localize("control.") }}
-                        </p>
-                        <p>
-                            {{ localize("Once your collection is complete, enter a") }}
-                            <i data-target=".collection-name">
-                                {{ localize("name") }}
-                            </i>
-                            {{ localize("and click ") }}
-                            <i data-target=".create-collection">
-                                {{ localize("Create list") }}
-                            </i>
-                            {{ localize(". (Note: you do not have to pair all unpaired datasets to finish.)") }}
-                        </p>
-                    </template>
-                    <template v-slot:middle-content>
+                            <span v-if="extensions?.length">
+                                {{ localize("The following extensions are required for this collection: ") }}
+                                <ul>
+                                    <li v-for="extension in extensions" :key="extension">
+                                        {{ extension }}
+                                    </li>
+                                </ul>
+                            </span>
+                        </BAlert>
+                        <BAlert v-else show variant="warning" dismissible>
+                            {{ INVALID_HEADER }}
+                            <ul>
+                                <li v-for="problem in returnInvalidElements" :key="problem">
+                                    {{ problem }}
+                                </li>
+                            </ul>
+                            {{ ALL_INVALID_ELEMENTS_PART_ONE }}
+                            <a class="cancel-text" href="javascript:void(0)" role="button" @click="emit('on-cancel')">
+                                {{ CANCEL_TEXT }}
+                            </a>
+                            {{ allInvalidElementsPartTwo }}
+                        </BAlert>
+                    </div>
+                    <div v-else-if="tooFewElementsSelected">
+                        <div v-if="returnInvalidElementsLength">
+                            <BAlert show variant="warning" dismissible>
+                                {{ INVALID_HEADER }}
+                                <ul>
+                                    <li v-for="problem in returnInvalidElements" :key="problem">
+                                        {{ problem }}
+                                    </li>
+                                </ul>
+                            </BAlert>
+                        </div>
+                        <BAlert show variant="warning" dismissible>
+                            {{ ALL_INVALID_ELEMENTS_PART_ONE }}
+                            <a class="cancel-text" href="javascript:void(0)" role="button" @click="emit('on-cancel')">
+                                {{ CANCEL_TEXT }}
+                            </a>
+                            {{ allInvalidElementsPartTwo }}
+                        </BAlert>
+                    </div>
+                    <div v-else>
                         <BCard no-body class="mb-2">
                             <BCardHeader
                                 class="d-flex justify-content-between align-items-center unselectable"
@@ -1308,9 +1292,9 @@ function _naiveStartingAndEndingLCS(s1: string, s2: string) {
                                 </div>
                             </div>
                         </div>
-                    </template>
-                </CollectionCreator>
-            </div>
+                    </div>
+                </template>
+            </CollectionCreator>
         </div>
     </div>
 </template>
diff --git a/client/src/components/Collections/common/CollectionCreator.vue b/client/src/components/Collections/common/CollectionCreator.vue
index c080744dbe3..7e2401d0bd7 100644
--- a/client/src/components/Collections/common/CollectionCreator.vue
+++ b/client/src/components/Collections/common/CollectionCreator.vue
@@ -1,7 +1,7 @@
 <script setup lang="ts">
 import { faChevronDown, faChevronUp, faPlus, faUpload } from "@fortawesome/free-solid-svg-icons";
 import { FontAwesomeIcon } from "@fortawesome/vue-fontawesome";
-import { BAlert, BButton, BFormCheckbox, BFormGroup, BFormInput, BTab, BTabs } from "bootstrap-vue";
+import { BAlert, BButton, BFormCheckbox, BFormGroup, BFormInput, BLink, BTab, BTabs } from "bootstrap-vue";
 import { storeToRefs } from "pinia";
 import { computed, ref, watch } from "vue";
 
@@ -38,6 +38,7 @@ interface Props {
     renderExtensionsToggle?: boolean;
     extensions?: string[];
     extensionsToggle?: boolean;
+    noItems?: boolean;
 }
 
 const props = withDefaults(defineProps<Props>(), {
@@ -134,103 +135,114 @@ watch(
 <template>
     <BTabs v-model="currentTab" fill justified>
         <BTab class="collection-creator" :title="localize('Create Collection')">
-            <div class="header flex-row no-flex">
-                <div class="main-help well clear" :class="{ expanded: isExpanded }">
-                    <a
-                        class="more-help"
-                        href="javascript:void(0);"
-                        role="button"
-                        :title="localize('Expand or Close Help')"
-                        @click="clickForHelp">
-                        <div v-if="!isExpanded">
-                            <FontAwesomeIcon :icon="faChevronDown" />
-                            <span class="sr-only">{{ localize("Expand Help") }}</span>
-                        </div>
-                        <div v-else>
-                            <FontAwesomeIcon :icon="faChevronUp" />
-                            <span class="sr-only">{{ localize("Close Help") }}</span>
-                        </div>
-                    </a>
-
-                    <div class="help-content">
-                        <!-- each collection that extends this will add their own help content -->
-                        <slot name="help-content"></slot>
-
+            <div v-if="props.noItems">
+                <BAlert variant="info" show>
+                    {{ localize("No items available to create a collection.") }}
+                    {{ localize("Exit and change your current history, or") }}
+                    <BLink class="text-decoration-none" @click.stop.prevent="currentTab = Tabs.upload">
+                        {{ localize("Upload some datasets.") }}
+                    </BLink>
+                </BAlert>
+            </div>
+            <div v-else>
+                <div class="header flex-row no-flex">
+                    <div class="main-help well clear" :class="{ expanded: isExpanded }">
                         <a
                             class="more-help"
                             href="javascript:void(0);"
                             role="button"
                             :title="localize('Expand or Close Help')"
                             @click="clickForHelp">
-                            <span class="sr-only">{{ localize("Expand Help") }}</span>
-                        </a>
-                    </div>
-                </div>
-            </div>
-
-            <div class="middle flex-row flex-row-container">
-                <slot name="middle-content"></slot>
-            </div>
-
-            <div class="footer flex-row">
-                <div class="vertically-spaced">
-                    <div class="d-flex align-items-center justify-content-between">
-                        <BAlert v-if="extensions?.length" class="w-100 py-0" variant="secondary" show>
-                            <HelpText
-                                uri="galaxy.collections.collectionBuilder.filteredExtensions"
-                                :text="localize('Filtered extensions: ')" />
-                            <strong>{{ orList(extensions) }}</strong>
-                        </BAlert>
-                    </div>
-
-                    <div class="d-flex align-items-center justify-content-between">
-                        <BFormGroup class="inputs-form-group">
-                            <BFormCheckbox
-                                v-if="renderExtensionsToggle"
-                                name="remove-extensions"
-                                switch
-                                :checked="extensionsToggle"
-                                @input="emit('remove-extensions-toggle')">
-                                {{ localize("Remove file extensions?") }}
-                            </BFormCheckbox>
-
-                            <div data-description="hide original elements">
-                                <BFormCheckbox v-model="localHideSourceItems" name="hide-originals" switch>
-                                    <HelpText
-                                        uri="galaxy.collections.collectionBuilder.hideOriginalElements"
-                                        :text="localize('Hide original elements')" />
-                                </BFormCheckbox>
+                            <div v-if="!isExpanded">
+                                <FontAwesomeIcon :icon="faChevronDown" />
+                                <span class="sr-only">{{ localize("Expand Help") }}</span>
                             </div>
-                        </BFormGroup>
+                            <div v-else>
+                                <FontAwesomeIcon :icon="faChevronUp" />
+                                <span class="sr-only">{{ localize("Close Help") }}</span>
+                            </div>
+                        </a>
 
-                        <BFormGroup
-                            class="flex-gapx-1 d-flex align-items-center w-50 inputs-form-group"
-                            :label="localize('Name:')"
-                            label-for="collection-name">
-                            <BFormInput
-                                id="collection-name"
-                                v-model="collectionName"
-                                class="collection-name"
-                                :placeholder="localize('Enter a name for your new collection')"
-                                size="sm"
-                                required
-                                :state="!collectionName ? false : null" />
-                        </BFormGroup>
+                        <div class="help-content">
+                            <!-- each collection that extends this will add their own help content -->
+                            <slot name="help-content"></slot>
+
+                            <a
+                                class="more-help"
+                                href="javascript:void(0);"
+                                role="button"
+                                :title="localize('Expand or Close Help')"
+                                @click="clickForHelp">
+                                <span class="sr-only">{{ localize("Expand Help") }}</span>
+                            </a>
+                        </div>
                     </div>
                 </div>
 
-                <div class="actions vertically-spaced d-flex justify-content-between">
-                    <BButton tabindex="-1" @click="cancelCreate">
-                        {{ localize("Cancel") }}
-                    </BButton>
+                <div class="middle flex-row flex-row-container">
+                    <slot name="middle-content"></slot>
+                </div>
 
-                    <BButton
-                        class="create-collection"
-                        variant="primary"
-                        :disabled="!validInput"
-                        @click="emit('clicked-create', collectionName)">
-                        {{ localize("Create collection") }}
-                    </BButton>
+                <div class="footer flex-row">
+                    <div class="vertically-spaced">
+                        <div class="d-flex align-items-center justify-content-between">
+                            <BAlert v-if="extensions?.length" class="w-100 py-0" variant="secondary" show>
+                                <HelpText
+                                    uri="galaxy.collections.collectionBuilder.filteredExtensions"
+                                    :text="localize('Filtered extensions: ')" />
+                                <strong>{{ orList(extensions) }}</strong>
+                            </BAlert>
+                        </div>
+
+                        <div class="d-flex align-items-center justify-content-between">
+                            <BFormGroup class="inputs-form-group">
+                                <BFormCheckbox
+                                    v-if="renderExtensionsToggle"
+                                    name="remove-extensions"
+                                    switch
+                                    :checked="extensionsToggle"
+                                    @input="emit('remove-extensions-toggle')">
+                                    {{ localize("Remove file extensions?") }}
+                                </BFormCheckbox>
+
+                                <div data-description="hide original elements">
+                                    <BFormCheckbox v-model="localHideSourceItems" name="hide-originals" switch>
+                                        <HelpText
+                                            uri="galaxy.collections.collectionBuilder.hideOriginalElements"
+                                            :text="localize('Hide original elements')" />
+                                    </BFormCheckbox>
+                                </div>
+                            </BFormGroup>
+
+                            <BFormGroup
+                                class="flex-gapx-1 d-flex align-items-center w-50 inputs-form-group"
+                                :label="localize('Name:')"
+                                label-for="collection-name">
+                                <BFormInput
+                                    id="collection-name"
+                                    v-model="collectionName"
+                                    class="collection-name"
+                                    :placeholder="localize('Enter a name for your new collection')"
+                                    size="sm"
+                                    required
+                                    :state="!collectionName ? false : null" />
+                            </BFormGroup>
+                        </div>
+                    </div>
+
+                    <div class="actions vertically-spaced d-flex justify-content-between">
+                        <BButton tabindex="-1" @click="cancelCreate">
+                            {{ localize("Cancel") }}
+                        </BButton>
+
+                        <BButton
+                            class="create-collection"
+                            variant="primary"
+                            :disabled="!validInput"
+                            @click="emit('clicked-create', collectionName)">
+                            {{ localize("Create collection") }}
+                        </BButton>
+                    </div>
                 </div>
             </div>
         </BTab>
diff --git a/client/src/components/Form/Elements/FormData/FormData.vue b/client/src/components/Form/Elements/FormData/FormData.vue
index d2a0e0b87ce..de820ccef64 100644
--- a/client/src/components/Form/Elements/FormData/FormData.vue
+++ b/client/src/components/Form/Elements/FormData/FormData.vue
@@ -90,6 +90,14 @@ const dragTarget: Ref<EventTarget | null> = ref(null);
 const collectionModalShow = ref(false);
 const collectionModalType = ref<"list" | "list:paired" | "paired">("list");
 const { currentHistoryId } = storeToRefs(useHistoryStore());
+const restrictsExtensions = computed(() => {
+    const extensions = props.extensions;
+    if (!extensions || extensions.length == 0 || extensions.indexOf("data") >= 0) {
+        return false;
+    } else {
+        return true;
+    }
+});
 
 /** Store options which need to be preserved **/
 const keepOptions: Record<string, SelectOption> = {};
@@ -649,7 +657,7 @@ const noOptionsWarningMessage = computed(() => {
                     </BButton>
                 </BButtonGroup>
             </BButtonGroup>
-            <div v-if="extensions && extensions.length > 0">
+            <div v-if="restrictsExtensions">
                 <BButton :id="formatsButtonId" class="ui-link" @click="formatsVisible = !formatsVisible">
                     accepted formats
                     <FontAwesomeIcon v-if="formatsVisible" :icon="faCaretUp" />
diff --git a/client/src/components/User/ExternalIdentities/ExternalLogin.vue b/client/src/components/User/ExternalIdentities/ExternalLogin.vue
index 6b688a9883f..2bcf4c1f4b5 100644
--- a/client/src/components/User/ExternalIdentities/ExternalLogin.vue
+++ b/client/src/components/User/ExternalIdentities/ExternalLogin.vue
@@ -77,7 +77,14 @@ async function submitOIDCLogin(idp: string) {
     loading.value = true;
 
     try {
-        const { data } = await axios.post(withPrefix(`/authnz/${idp}/login`));
+        const loginUrl = withPrefix(`/authnz/${idp}/login`);
+        const urlParams = new URLSearchParams(window.location.search);
+        const redirectParam = urlParams.get("redirect");
+
+        const formData = new FormData();
+        formData.append("next", redirectParam || "");
+
+        const { data } = await axios.post(loginUrl, formData, { withCredentials: true });
 
         if (data.redirect_uri) {
             window.location = data.redirect_uri;
diff --git a/lib/galaxy/selenium/navigates_galaxy.py b/lib/galaxy/selenium/navigates_galaxy.py
index 511264ff326..141d6e1c28e 100644
--- a/lib/galaxy/selenium/navigates_galaxy.py
+++ b/lib/galaxy/selenium/navigates_galaxy.py
@@ -1209,7 +1209,7 @@ class NavigatesGalaxy(HasDriver):
         # Make sure we're on the workflow editor and not clicking the main tool panel.
         editor.canvas_body.wait_for_visible()
 
-        editor.tool_menu.wait_for_visible()
+        self.open_toolbox()
         editor.tool_menu_section_link(section_name="inputs").wait_for_and_click()
         editor.tool_menu_item_link(item_name=item_name).wait_for_and_click()
 
diff --git a/lib/galaxy/webapps/galaxy/controllers/authnz.py b/lib/galaxy/webapps/galaxy/controllers/authnz.py
index 1abcc722ce6..af7330e5c0c 100644
--- a/lib/galaxy/webapps/galaxy/controllers/authnz.py
+++ b/lib/galaxy/webapps/galaxy/controllers/authnz.py
@@ -19,6 +19,7 @@ from galaxy.webapps.base.controller import JSAppLauncher
 log = logging.getLogger(__name__)
 
 PROVIDER_COOKIE_NAME = "galaxy-oidc-provider"
+LOGIN_NEXT_COOKIE_NAME = "galaxy-oidc-login-next"
 
 
 class OIDC(JSAppLauncher):
@@ -72,12 +73,14 @@ class OIDC(JSAppLauncher):
 
     @web.json
     @web.expose
-    def login(self, trans, provider, idphint=None):
+    def login(self, trans, provider, idphint=None, next=None):
         if not trans.app.config.enable_oidc:
             msg = "Login to Galaxy using third-party identities is not enabled on this Galaxy instance."
             log.debug(msg)
             return trans.show_error_message(msg)
-        success, message, redirect_uri = trans.app.authnz_manager.authenticate(provider, trans, idphint=idphint)
+        if next:
+            trans.set_cookie(value=next, name=LOGIN_NEXT_COOKIE_NAME)
+        success, message, redirect_uri = trans.app.authnz_manager.authenticate(provider, trans, idphint)
         if success:
             return {"redirect_uri": redirect_uri}
         else:
@@ -86,6 +89,7 @@ class OIDC(JSAppLauncher):
     @web.expose
     def callback(self, trans, provider, idphint=None, **kwargs):
         user = trans.user.username if trans.user is not None else "anonymous"
+        login_next = url_for(trans.get_cookie(name=LOGIN_NEXT_COOKIE_NAME) or "/")
         if not bool(kwargs):
             log.error(f"OIDC callback received no data for provider `{provider}` and user `{user}`")
             return trans.show_error_message(
@@ -110,7 +114,7 @@ class OIDC(JSAppLauncher):
                 kwargs.get("state", " "),
                 kwargs["code"],
                 trans,
-                login_redirect_url=url_for("/"),
+                login_redirect_url=login_next,
                 idphint=idphint,
             )
         except exceptions.AuthenticationFailed: