Well, I'm not sure. Even if the answer is that it should leave 7 alone, I would still back everything up. Having copies is never a bad thing.
For sure! Im a freaking backup fanatic. Trust me, when I work on a word document, literally almost every sentence I save... Problem is.. I only have two drives that are big enough for backup. My laptop and WD drive. So if something goes wrong, thats a 500gig file transfer that I'll need to do - thanks for the reply!