support for the Service sync_step
diff --git a/xos/core/models/service.py b/xos/core/models/service.py
index 8d2180c..e56f605 100644
--- a/xos/core/models/service.py
+++ b/xos/core/models/service.py
@@ -67,6 +67,10 @@
         return cls.objects.filter(kind = cls.KIND)
 
     @classmethod
+    def get_deleted_service_objects(cls):
+        return cls.deleted_objects.filter(kind = cls.KIND)
+
+    @classmethod
     def get_service_objects_by_user(cls, user):
         return cls.select_by_user(user).filter(kind = cls.KIND)