diff --git a/PerMgr/Tnb.PerMgr/PerProcessParamTypeService.cs b/PerMgr/Tnb.PerMgr/PerProcessParamTypeService.cs
index e71ed103..2d7f0342 100644
--- a/PerMgr/Tnb.PerMgr/PerProcessParamTypeService.cs
+++ b/PerMgr/Tnb.PerMgr/PerProcessParamTypeService.cs
@@ -135,7 +135,7 @@ namespace Tnb.PerMgr
 
                     List<string> notDeleteIds = input.Select(x => x.id).ToList();
                     notDeleteIds.AddRange(insertIds);
-                    await db.Deleteable<PerProcessStandardsD>().Where(x => !notDeleteIds.Contains(x.id)).ExecuteCommandAsync();
+                    await db.Deleteable<PerProcessStandardsD>().Where(x => !notDeleteIds.Contains(x.id) && x.process_standards_id==input[0].process_standards_id).ExecuteCommandAsync();
 
 
                 }