Helen,
Thanks for your reply. I figured it was a long shot with trying this post, but it's then only one I've found so far that offered any ideas. I looked in the documentation for Grade import earlier and unfortunately as far as I can tell, Moodle won't allow you to add columns to the file. It will return an error on import. If I could figure out a way to import columns for assignments and categories that would be helpful. From their discussion, it sounded like it might be only one table, but I don't have access to the database and not exactly sure how to go about it anyway. Hopefully someone will have some ideas. Thanks.