Track information is missing

Hey

Recently changed Macbooks and I have just opened up Rekordbox and noticed all my track information is missing. The macbooks had different names so i have fixed up the track location of all the songs with the new user. The tracks are loaded in the iTunes library of rekordbox. However, the track information (cues, key, bpm, etc) is still missing.

I'm pretty sure it has something to do with the rekordbox xml, but i have no idea where to find it. 

Cheers