Missing Modules

[DLTech]

I have an instructor who has a couple of courses that have suddenly lost the modules.  It's multiple courses over multiple years that no longer have the modules that he has built.  I've tried the undelete option.  I've also checked the course import history to see if anything has been imported in that would erase the modules and there isn't anything.  I can't use the course restore admin tool because the course wasn't deleted.  He's put a lot of work into these modules and I would hate for it to all disappear.  Any ideas of what else I can try?  Thank you for your time.