A course using the Grid Format in 2.9 seemingly successfully backs up. But when you restore the backed up course, the restore gets to stage 6 ('Process') and freezes. When you break out of the restore process, you find that a course has been created, but it does not have any course resources.

Steps
•Backup a course in the 'Grid' format in Moodle 2.9 in the normal manner from the 'Backup' link in the administration block of the course.
•On successful completion of backup, restore the course as a new course.

What we expected:
Full completion of Restore. New course with Grid Images and all of the course's resources.

What actually happened:
No Grid images, even more importantly, no resources! An empty grid and empty sections.
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