backup/restore function of default_questiontype class never support extra_question_fields() , thought a commentary before extra_question_fields() boldly states it does.
Adding such functionality allows us to make backup/restore in shortanswer use extra_question_fields(), and so become more inheritable.
The issue seems to be pretty easy, so I'm probably be able to do it by myself (I'm not talking of extra_answer_fields() support, just extra_question_fields() ). Hope you'll appreciate it and converting shortanswer to use it.
- has been marked as being related by
MDL-25617 Backup/restore of extra_question_fields broken in 2.0