I was coming here to ask this same thing.
Several of the people in my tree, when I uploaded the GED file to RootsMagic are now in the tree multiple times. Quite a few are in the 7-9 x range.
When doing a manual merge a box pops up letting me know the same record can't be merged with the same record.
I deleted one of the duplicates to see if that would work, but it deleted that entry of the person and all the other instances of that person as well. So, instead of 8 listings of the same person there are none and the entire record is gone.
Can someone help me? There was a couple other things, but that was from last night and I don't remember them now. I will later.