Places not in Ancestry show up in RM8 after downloading the Ancestry file

I’m cleaning up the places. Before I downloaded my Ancestry file into RM8, I had done a lot of cleanup in Ancestry alone. I’m now finding some of the old places in the downloaded RM8 file as additional entries but no corresponding entry in the Ancestry DB. Shouldn’t they be the same? Does my Ancestry DB have hidden entries after I changed them? Where did they come from? Am I doing something wrong?