Never had this issue before with the last engine prime version. Am trying to transfer new track in the usb stick. Everything goes in with no problem. How the track don’t match the song seem like the data not picking up the new tracks am putting in. It’s been a long time since I use engine prime. Or maybe am doing something wrong is the a video on how to transfer playlists to usb? Am using the new prime 4 which is a bad ass unit! 
I don’t understand what am doing wrong. Works no problems loading tracks the first time. But when adding new more playlists. It not picking up the new music database or something. Hope I made any sense. Thanks