Drag&drop playlist from serato dj to rekordbox - doesn't allways copy all the tracks?

besides what pulse said there might be another issue. There are some characters in the track's filepath Rekordbox does not allow/accept. I do this from the top of my head but I think it's the ";" and the \ that can be problematic if the filename/track path contains them. These tracks will be missing (so most Axwell /\ Ingrosso tracks are subject to this)

That too ^^ - there are a few reasons it may not work, but trying to narrow it down to one specific track first and figuring out why it won't import would probably tell you about the others as well.

Ok