/**
  * Always update the related products after save.
  *
  * @param  Varien_Object $object Object Model
  * @return FireGento_DynamicCategory_Model_Entity_Attribute_Backend_Rule Self.
  */
 public function afterSave($object)
 {
     $object->setIsChangedProductList(true);
     return parent::afterSave($object);
 }