only generate a new id in _get_id if the folder already contains an object...

only generate a new id in _get_id if the folder already contains an object with the id of the object we are about to paste.


git-svn-id: https://svn.erp5.org/repos/public/erp5/trunk@5557 20353a03-c40f-0410-a6d1-a30d3c3de9de

product/ERP5Type/Document/Folder.py

@@ -298,6 +298,8 @@ be a problem)."""
 
   # Override Zope default by folder id generation
   def _get_id(self, id):
+    if self._getOb(id, None) is None :
+      return id
     return self.generateNewId()
     
   #security.declareProtected( Permissions.DeletePortalContent, 'manage_delObjects' )