I also have the problem of not being able to restore a course that contains many quizzes.
My backup restores fine through Moodle 2.5.5, but with Moodle 2.6 and above, it hangs at the 99% point, without restoring the categories that organize the quizzes and make the gradebook intelligible. Without the categories, I have no course. I use about three dozen copies of that course, so completing each by hand is impractical.
Excluding quizzes from my backup would mean excluding virtually the
entire course, because I use the feedback in quizzes to provide targeted
instruction: They are instructional quizzes. The quizzes ARE the
Restoring the course in multiple stages -- which has not worked so far -- would be impractical because of the number of courses I deal with.
What happened in Moodle 2.6 that caused a working process to break, so that the restore no longer finishes?
Do you foresee this problem being fixed? How could I find out?
If I am causing the problem, how do I get help in finding what to change? If Moodle is causing the problem, who can fix that?
I've been through every forum discussion a search turns up. I've found and deleted the few categories that did not have valid contexts. I've tweaked MySQL at the server and php.ini on the site. I have turned off saving sessions to the database. I have stopped tracking completions. Nothing so far has helped.
Changes in Moodle 2.6 turned a restore into a problem. Can we start with that and work back toward a solution?
Thanks for your patience and any insight you may have. If you suspected that this is a frustrating situation for us, you are right.