protected function beforeSyncWithOriginal($origQuestionId, $dupQuestionId, $origParentObjId, $dupParentObjId)
 {
     parent::beforeSyncWithOriginal($origQuestionId, $dupQuestionId, $origParentObjId, $dupParentObjId);
     $question = self::_instanciateQuestion($origQuestionId);
     foreach ($question->getAnswers() as $answer) {
         $question->removeAnswerImage($answer->getPosition());
     }
 }