Am running Catalina on an early 2015 MBA. I have a file titled 8mm Movies in my Desktop which I was wanting to move to Movies. I tried to drag and drop it from Desktop into Movies in Finder, and I get a window that says "Are you sure...? This item will be moved to this Mac and will no longer be available in iCloud Drive or any of your devices." I do not understand what this is trying to tel me! Isn't it already in this Mac? Is moving it going to delete it from iCloud Drive?