In the process of exporting a exam, the "Random within Part" feature is lost.
- create an exam
- Edit a part of this exam, as example, the default part, edit it and set "Random whithin Part"
- export the test.
- import it, in the same site or into another site.
- check the "Random whithin Part"= it is not marked.
and local of 2.9 and 10.5.