fix: LSDV-4974: Add storage status and debug: fix migration (HumanSig…

…nal#4198)

* fix: LSDV-4974: Add storage status and debug: fix migration

* Fix

label_studio/io_storages/migrations/0014_init_statuses.py

@@ -8,18 +8,21 @@
 
 def update_storage(storage):
     logger.info(f'=> Migration for {storage._meta.label} statuses started')
-
     storage.objects.update(status='initialized')
     instances = list(storage.objects.all().only('id', 'meta', 'status', 'last_sync_count'))
 
     for instance in instances:
         prefix = f'Project ID={instance.project.id} {instance}'
 
+        # import source storages
         if 'import' in storage._meta.label_lower:
-            instance.meta['tasks_existed'] = instance.links.count()
+            count = instance.links.count() - instance.last_sync_count if instance.last_sync_count else 0
+            instance.meta['tasks_existed'] = count if count > 0 else 0
             if instance.meta['tasks_existed'] and instance.meta['tasks_existed'] > 0:
                 instance.status = 'completed'
             logger.info(f'{prefix} tasks_existed = {instance.meta["tasks_existed"]}')
+
+        # target export storages
         else:
             instance.meta['total_annotations'] = instance.last_sync_count
             if instance.last_sync_count and instance.last_sync_count > 0: