I recently got a Mac Studio M1 Max. today I just noticed that if I open my system HD and do a search for "movies", a bunch of movies from my old 2007 iMac show up. I never linked these to the cloud and I never put them on the new computer. Full disclosure- I had an external HD mounted, and when it was mounted, ALL my old movies showed up. that kind of makes sense because all the old movies are on this drive...but I didn't do the file search in the external drive, only the system drive. Nonetheless, when I ejected the external, all the movies disappeared...except for about 10 of them. very strange. any ideas as to how this happened?