I "copied" the Fall course into the empty shell for the Spring course. When I try to "edit" the Spring course it shows the Fall course in the course id box in the upper left. It is not just a copy, it is the same course. I actually did try to alter the Spring course and it changed the currently underway Fall course too, since what's in the Spring course is everything from the current Fall course. After trying to delete the posts in the new Spring course, I lost the same posts in the currently running course.
It took some real scrambling to restore the Fall course to the way it is supposed to be. Now I'm afraid to do anything else to the Spring course because I would lose the materials in the Fall course. The lesson here is that one should never copy a currently running course into an empty shell. I didn't know that at the time--I thought I could just change dates and be done!
So clearly I somehow need to remove or reset the Spring course to return it to an empty shell so I can start over again.
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