Sorry to keep bothering everyone...but this is related to our migration to all online classes due to the coronavirus pandemic.

I had to make a lot of changes to accommodate the online environment, so I did it all in one course and then did a "Course Import" for the other 2 classes (they're all the same class...just different days/times). Even tho I only imported specific content, I still ended up with some duplicates, which I deleted.

I thought everything was fine until I just looked at my gradebook, and discovered that there are duplicates of some--not all--of the assignments. I double-checked in "Assignments," "Pages," and even "Files" to make sure I didn't have duplicates, and there aren't any...and yet there are duplicates in the Gradebook.

Any ideas about what I did wrong and how to correct it?