Long story short, an account was deleted which stored some Drive date in it's My Drive. I restored it and offered to migrate the data in the My Drive to a/the Shared Drive the user uses. Well the Share Drive is at 75% total items (300,000), and moving the data from the deleted account to the Shared Drive would exceed the 400,000 item limit. Looking at what is remaining in the deleted users My Drive, it doesn't appear there are 100,000+ items left to move...
So my question is: does the item limit traverse shortcuts to other locations/drives/share drives? Do ZIP folders count towards multiple items (say the ZIP folder has 400 items total in there, does that count 400 items or just one ZIP, since I don't think Google Drive can access ZIP natively)?