We are running the Ordering Questions question type found at http://moodle.org/mod/data/view.php?d=13&rid=978&filter=1
We have done a backup of the course to duplicate it on another machine.
When we go to Restore the course everything is restored except the "subquestions" in Ordering Questions.
The question description are restored fine, and the questions are listed right in the Question Bank with their question type icon (something like "123").
But if you edit them or launch the questio preview the subquestions aren't there.

I checked the Moodle XML in the backup zipe and looks like the subquestions are listed there, so I think that is a problem in the restore side of the backup process, maybe a problem parsing the subquestions