diff --git a/app/models/application_model/search_index_base.rb b/app/models/application_model/search_index_base.rb
index 01a2c0eea..a657bd065 100644
--- a/app/models/application_model/search_index_base.rb
+++ b/app/models/application_model/search_index_base.rb
@@ -122,9 +122,6 @@ returns
 
       # save name of ref object
       attributes_new[ attribute_name ] = value
-      if !keep_attributes[ attribute_name_with_id.to_sym ]
-        attributes.delete(key)
-      end
     }
     attributes_new.merge(attributes)
   end