Yeah I’d want to fully control the property and protect it as soon as possible. I don’t have a problem with physically getting past the lock, but if someone else has possession of the property, I can’t go in and lock them out just because I own it. I don’t think anyone else has possession, but I’m wondering if there’s some process or best practice for making sure and for dealing with the personal property inside the house.As far as the keys, I would want the locks changed immediately anyway, so seems to me the worst case is drill or break the locks, and have new ones to install. You could always have them re-keyed of course, if you don't have to break in so that would probably be better, but not by a lot.