I'm having the same problem. Updated to 2.0.1 today. I then analyze all the tracks in my rekordbox library for missing info. I then analyzed for keys. After re-transferring all the files from the rekordbox library to my USB device within rekordbox I find that the KEY column for tracks has not updated as they have in my rekordbox library. Why is this the case and how do I get the keys to display on the device? Would be helpful to have key information available for tracks when I plug my USB into CDJs. Thanks!