diff --git a/app/Http/Controllers/Api/FileController.php b/app/Http/Controllers/Api/FileController.php
index e1f8bf501..bf8f213e2 100755
--- a/app/Http/Controllers/Api/FileController.php
+++ b/app/Http/Controllers/Api/FileController.php
@@ -418,7 +418,7 @@ class FileController extends AbstractController
                             throw new ApiException("{$file->name} 内含有共享文件，无法移动到另一个共享文件夹内");
                         }
                         $file->userid = $toShareFile->userid;
-                        File::where('pids', 'LIKE', "%,{$file->id},%")->update(['userid' => $toShareFile->userid]);
+                        $file->updateChildFilesUserid($toShareFile->userid);
                     }
                     //
                     $tmpId = $pid;
@@ -430,7 +430,7 @@ class FileController extends AbstractController
                     }
                 } else {
                     $file->userid = $user->userid;
-                    File::where('pids', 'LIKE', "%,{$file->id},%")->update(['userid' => $user->userid]);
+                    $file->updateChildFilesUserid($user->userid);
                 }
                 //
                 $file->pid = $pid;
diff --git a/app/Http/Controllers/Api/ProjectController.php b/app/Http/Controllers/Api/ProjectController.php
index 620e45c4e..cee34f93e 100755
--- a/app/Http/Controllers/Api/ProjectController.php
+++ b/app/Http/Controllers/Api/ProjectController.php
@@ -2379,7 +2379,7 @@ class ProjectController extends AbstractController
             $task->save();
             ProjectTaskUser::whereTaskId($task->id)->update(['task_pid' => $task->id]);
             if ($task->visibility == 3 && !empty($visibilityUserids)) {
-                ProjectTaskVisibilityUser::whereTaskId($task->id)->delete();
+                ProjectTaskVisibilityUser::whereTaskId($task->id)->remove();
                 foreach (array_unique($visibilityUserids) as $userid) {
                     if (!$userid) {
                         continue;
@@ -3031,7 +3031,7 @@ class ProjectController extends AbstractController
                 $taskTag->project_id = $project->id;
                 $taskTag->save();
             }
-            ProjectTaskUser::whereTaskId($copy->id)->delete();
+            ProjectTaskUser::whereTaskId($copy->id)->remove();
             $copy->setRelation('taskUser', collect());
             $copy->setRelation('project', $project);
             $updateData = [
diff --git a/app/Models/File.php b/app/Models/File.php
index c65ce8d39..dca2c6afe 100644
--- a/app/Models/File.php
+++ b/app/Models/File.php
@@ -6,6 +6,8 @@ use Request;
 use App\Module\Apps;
 use App\Module\Base;
 use App\Tasks\PushTask;
+use App\Tasks\ManticoreSyncTask;
+use App\Observers\AbstractObserver;
 use App\Exceptions\ApiException;
 use Illuminate\Support\Facades\DB;
 use Hhxsv5\LaravelS\Swoole\Task\Task;
@@ -623,6 +625,26 @@ class File extends AbstractModel
         return true;
     }
 
+    /**
+     * 批量更新子文件的 userid 并同步到 Manticore
+     * @param int $userid 新的 userid
+     * @return int 更新的文件数量
+     */
+    public function updateChildFilesUserid(int $userid): int
+    {
+        self::where('pids', 'like', "%,{$this->id},%")->update(['userid' => $userid]);
+
+        // 批量 update 绕过 Observer，手动触发 Manticore 同步
+        $childFileIds = self::where('pids', 'like', "%,{$this->id},%")
+            ->where('type', '!=', 'folder')
+            ->pluck('id')
+            ->toArray();
+        foreach ($childFileIds as $childFileId) {
+            AbstractObserver::taskDeliver(new ManticoreSyncTask('file_sync', ['id' => $childFileId]));
+        }
+        return count($childFileIds);
+    }
+
     /**
      * 获取文件分享链接
      * @param $userid
diff --git a/app/Models/FileUser.php b/app/Models/FileUser.php
index ce146f43f..cc31457cd 100644
--- a/app/Models/FileUser.php
+++ b/app/Models/FileUser.php
@@ -45,7 +45,7 @@ class FileUser extends AbstractModel
             } else {
                 FileLink::whereFileId($file_id)->delete();
             }
-            FileUser::whereFileId($file_id)->delete();
+            FileUser::whereFileId($file_id)->remove();
         });
     }
     /**
@@ -58,7 +58,7 @@ class FileUser extends AbstractModel
     {
         return AbstractModel::transaction(function() use ($userid, $file_id) {
             FileLink::whereFileId($file_id)->whereUserid($userid)->delete();
-            return self::whereFileId($file_id)->whereUserid($userid)->delete();
+            return self::whereFileId($file_id)->whereUserid($userid)->remove();
         });
     }
 }
diff --git a/app/Models/ProjectTask.php b/app/Models/ProjectTask.php
index 446c37bc8..81f1cf73a 100644
--- a/app/Models/ProjectTask.php
+++ b/app/Models/ProjectTask.php
@@ -800,7 +800,7 @@ class ProjectTask extends AbstractModel
                     $this->visibility = $data["visibility"];
                     ProjectTask::whereParentId($data['task_id'])->change(['visibility' => $data["visibility"]]);
                 }
-                ProjectTaskVisibilityUser::whereTaskId($data['task_id'])->delete();
+                ProjectTaskVisibilityUser::whereTaskId($data['task_id'])->remove();
                 if (Arr::exists($data, 'visibility_appointor')) {
                     foreach ($data['visibility_appointor'] as $uid) {
                         if ($uid) {
diff --git a/app/Observers/ProjectTaskUserObserver.php b/app/Observers/ProjectTaskUserObserver.php
index efc7c2ae1..812b1632f 100644
--- a/app/Observers/ProjectTaskUserObserver.php
+++ b/app/Observers/ProjectTaskUserObserver.php
@@ -42,7 +42,18 @@ class ProjectTaskUserObserver extends AbstractObserver
      */
     public function updated(ProjectTaskUser $projectTaskUser)
     {
-        //
+        // userid 变更时需要更新任务权限（移交场景）
+        if ($projectTaskUser->isDirty('userid')) {
+            self::taskDeliver(new ManticoreSyncTask('update_task_allowed_users', [
+                'task_id' => $projectTaskUser->task_id,
+            ]));
+            // 如果是子任务，也更新父任务
+            if ($projectTaskUser->task_pid) {
+                self::taskDeliver(new ManticoreSyncTask('update_task_allowed_users', [
+                    'task_id' => $projectTaskUser->task_pid,
+                ]));
+            }
+        }
     }
 
     /**
diff --git a/app/Observers/ProjectUserObserver.php b/app/Observers/ProjectUserObserver.php
index ac27a14b7..d3b9648ff 100644
--- a/app/Observers/ProjectUserObserver.php
+++ b/app/Observers/ProjectUserObserver.php
@@ -36,7 +36,15 @@ class ProjectUserObserver extends AbstractObserver
      */
     public function updated(ProjectUser $projectUser)
     {
-        //
+        // userid 变更时需要更新项目权限和级联任务权限（移交场景）
+        if ($projectUser->isDirty('userid')) {
+            self::taskDeliver(new ManticoreSyncTask('update_project_allowed_users', [
+                'project_id' => $projectUser->project_id,
+            ]));
+            self::taskDeliver(new ManticoreSyncTask('cascade_project_users', [
+                'project_id' => $projectUser->project_id,
+            ]));
+        }
     }
 
     /**