Index: units/helpers/country_states_helper.php
===================================================================
--- units/helpers/country_states_helper.php	(revision 16046)
+++ units/helpers/country_states_helper.php	(working copy)
@@ -97,7 +97,7 @@
 			$field_options = $object->GetFieldOptions($state_field);
 			$field_options['options'] = $this->getStates($country_iso);
 			$field_options['options'][''] = '';
-			$object->SetFieldOptions($state_field, $field_options);
+			$object->SetFieldOptions($state_field, $field_options, $object->isVirtualField($state_field));
 		}
 
 		/**