I think Moodle XML question importing/exporting can also support extra_question_fields() function. As always I am willing to use shortanswer question as an example and a testing case. Basic questiontype class could implement export_to_xml and import_from_xml functions, using extra_question_fields. I hope you will be interested in it.
- has been marked as being related by
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MDL-25617 Backup/restore of extra_question_fields broken in 2.0
- Closed