Rekordbox Database migration problem (mac)

Hey,

After buying my new macbookpro, I used migration assistent to move all files from my old mac to the new one. Everything works fine, except rekordbox. When I first opened it, I got the message there was no master database. I then made a backup from my rekordbox on my old mac (which works perfectly) without copying the music files. I installed this in rekordbox on the new MBP.

I can see all my tracks, and playlists, but can't open them. (the typical exclamation mark appears) Since I've alwalys used Itunes to sort my music, it's all in different directories, so I have to relocate them all one by one.... (I have +700 songs in rekordbox...) 

I don't get the problem since my music files (Itunes) are all in exact same directory as they are on the old MBP and the rekordbox backup I installed comes from that same MBP. Anyone who can help? I use rekordbox very often, and it's almost impossible to relocate +700 files by hand..

Thanks!