diff --git a/src/app/features/archive/task-archive.service.spec.ts b/src/app/features/archive/task-archive.service.spec.ts
index 3b1b3ada3d..1c7f8bb68b 100644
--- a/src/app/features/archive/task-archive.service.spec.ts
+++ b/src/app/features/archive/task-archive.service.spec.ts
@@ -449,6 +449,19 @@ describe('TaskArchiveService', () => {
       );
     });
 
+    it('should NOT dispatch when updates array is empty (issue #7268)', async () => {
+      archiveDbAdapterMock.loadArchiveYoung.and.returnValue(
+        Promise.resolve(createMockArchiveModel([])),
+      );
+      archiveDbAdapterMock.loadArchiveOld.and.returnValue(
+        Promise.resolve(createMockArchiveModel([])),
+      );
+
+      await service.updateTasks([]);
+
+      expect(storeMock.dispatch).not.toHaveBeenCalled();
+    });
+
     it('should NOT dispatch actions when isSkipDispatch is true', async () => {
       const task1 = createMockTask('task1', { title: 'Task 1' });
       const youngArchive = createMockArchiveModel([task1]);
diff --git a/src/app/features/archive/task-archive.service.ts b/src/app/features/archive/task-archive.service.ts
index bb9ca7d858..4eb53b4451 100644
--- a/src/app/features/archive/task-archive.service.ts
+++ b/src/app/features/archive/task-archive.service.ts
@@ -356,7 +356,9 @@ export class TaskArchiveService {
     // Using updateTasks (batch) instead of individual updateTask to create
     // a single operation instead of N operations. This is critical for
     // repeating task config updates that affect many archived instances.
-    if (!options?.isSkipDispatch) {
+    // Skip dispatch for empty updates to avoid an invalid operation-log entry
+    // with entityIds: [] (see operation-log.effects.ts validator).
+    if (!options?.isSkipDispatch && updates.length > 0) {
       this.store.dispatch(TaskSharedActions.updateTasks({ tasks: updates }));
     }
   }