Hey Stephen, thank you so much for putting all these tutorials together! The quality of your content is a million times better than courses I paid for. I can't understand why these videos don't have more views!
Hmmm, sounds like a strange issue. It might be that its just being "viewed" all the time. In the Mapping Editor, I would try clicking the Button "selected groups only" and then clicking between the different groups. That way, you are only seeing the zones/samples that are in each group, this might be the issue.