it is embedded within the files’ ID3 tags. You can rename that track and move to it to another computer. it will still have the cuepoints and beatgrid. just make sure you put the “analysis lock” on the track.
I’m not sure that’s actually true anymore… Traktor - as far as I know - stopped writing into the tags some time between Traktor 3 and TP2, not sure when exactly.
Let’s test it. I’ll send you one of my prepped tracks and you can load into Traktor on your computer. You should see the cuepoints,loops and beatgrid set.
I’ll PM you a dropbox link to a song in a few minutes.
I just make sure it has the little lock on the file in Traktor. I don’t do anything special. The latest version of Traktor (2.6.1) will re-analyse your file when bringing it in to Traktor if it does not have the lock.