From b463fef769b44f7a1df96c2e30c8aa84f401a3a6 Mon Sep 17 00:00:00 2001
From: wpxp123456 <2677556700@qq.com>
Date: Thu, 15 Jan 2026 17:00:31 +0800
Subject: [PATCH] fix(paste): optimize copy and paste mutations (#6472)

---
 .../src/controllers/clipboard/utils.ts        | 36 ++++++++++---------
 .../services/clipboard/clipboard.service.ts   |  4 ++-
 2 files changed, 22 insertions(+), 18 deletions(-)

diff --git a/packages/sheets-ui/src/controllers/clipboard/utils.ts b/packages/sheets-ui/src/controllers/clipboard/utils.ts
index e69a572211..e85917ee67 100644
--- a/packages/sheets-ui/src/controllers/clipboard/utils.ts
+++ b/packages/sheets-ui/src/controllers/clipboard/utils.ts
@@ -672,24 +672,26 @@ export function getClearAndSetMergeMutations(
             Rectangle.intersects({ startRow, startColumn, endRow, endColumn }, rect)
         );
 
-        const removeMergeMutationParams: IRemoveWorksheetMergeMutationParams = {
-            unitId,
-            subUnitId,
-            ranges: mergedCellsInRange,
-        };
-        redoMutationsInfo.push({
-            id: RemoveWorksheetMergeMutation.id,
-            params: removeMergeMutationParams,
-        });
+        if (mergedCellsInRange.length > 0) {
+            const removeMergeMutationParams: IRemoveWorksheetMergeMutationParams = {
+                unitId,
+                subUnitId,
+                ranges: mergedCellsInRange,
+            };
+            redoMutationsInfo.push({
+                id: RemoveWorksheetMergeMutation.id,
+                params: removeMergeMutationParams,
+            });
 
-        const undoRemoveMergeMutationParams: IAddWorksheetMergeMutationParams = RemoveMergeUndoMutationFactory(
-            accessor,
-            removeMergeMutationParams
-        );
-        undoMutationsInfo.push({
-            id: AddWorksheetMergeMutation.id,
-            params: undoRemoveMergeMutationParams,
-        });
+            const undoRemoveMergeMutationParams: IAddWorksheetMergeMutationParams = RemoveMergeUndoMutationFactory(
+                accessor,
+                removeMergeMutationParams
+            );
+            undoMutationsInfo.push({
+                id: AddWorksheetMergeMutation.id,
+                params: undoRemoveMergeMutationParams,
+            });
+        }
     }
 
     if (mergeRangeData.length > 0) {
diff --git a/packages/sheets-ui/src/services/clipboard/clipboard.service.ts b/packages/sheets-ui/src/services/clipboard/clipboard.service.ts
index ab4cbb8c7d..7d77fbee1f 100644
--- a/packages/sheets-ui/src/services/clipboard/clipboard.service.ts
+++ b/packages/sheets-ui/src/services/clipboard/clipboard.service.ts
@@ -930,6 +930,8 @@ export class SheetClipboardService extends Disposable implements ISheetClipboard
         }
 
         const rowManager = worksheet.getRowManager();
+        const defaultRowHeight = worksheet.getConfig().defaultRowHeight;
+
         const { rows, cols } = pastedRange;
         const pasteRangeStartRow = rows[0];
         const pasteRangeEndRow = rows[rows.length - 1];
@@ -948,7 +950,7 @@ export class SheetClipboardService extends Disposable implements ISheetClipboard
                         startColumn: pasteRangeStartColumn,
                         endColumn: pasteRangeEndColumn,
                     },
-                ]);
+                ]).filter((info) => info.autoHeight !== defaultRowHeight);
                 needAutoHeight.push(...autoHeight);
             }
         }