diff --git a/backend/internal/repository/batch_image_repo_integration_test.go b/backend/internal/repository/batch_image_repo_integration_test.go
index 174e0657e3..df6be4a954 100644
--- a/backend/internal/repository/batch_image_repo_integration_test.go
+++ b/backend/internal/repository/batch_image_repo_integration_test.go
@@ -208,6 +208,16 @@ func TestBatchImageRepository_ReplaceBatchImageItemsForJob(t *testing.T) {
 	})
 	require.NoError(t, err)
 
+	// 非 indexing 状态不允许重建 item 表：防止锁过期后掉队的 worker
+	// 重写已完成/已结算 job 的条目。
+	err = repo.ReplaceBatchImageItemsForJob(ctx, batchID, []service.CreateBatchImageItemParams{
+		{CustomID: "old", Status: service.BatchImageItemStatusSuccess, SourceLineNumber: &lineOne, ImageCount: 1},
+	}, service.BatchImageCounts{SuccessCount: 1})
+	require.ErrorIs(t, err, service.ErrBatchImageIndexStateConflict)
+
+	require.NoError(t, repo.TransitionBatchImageJobStatus(ctx, batchID, service.BatchImageJobStatusSubmitted, service.BatchImageTransitionOptions{}))
+	require.NoError(t, repo.TransitionBatchImageJobStatus(ctx, batchID, service.BatchImageJobStatusIndexing, service.BatchImageTransitionOptions{}))
+
 	err = repo.ReplaceBatchImageItemsForJob(ctx, batchID, []service.CreateBatchImageItemParams{
 		{CustomID: "old", Status: service.BatchImageItemStatusSuccess, SourceLineNumber: &lineOne, ImageCount: 1},
 	}, service.BatchImageCounts{SuccessCount: 1})