Question bank: topic vs title

Until now, the title and the topic (meta data) of an item in the question bank has been the same. These two should be two independent attributes. If creating a question item, the title is added (IMS QTI 2.1). the topic stays empty and can be edited in the meta data if desired. 

Migration: for the existing questions, the title is taken as title and the topic as topic, so still both fields are filled in. 

When creating a new question item, a title (not topic!) is added, the taxonomy and the question typ are chosen