This works for the later tune files, but some of the older versions do not load correctly when placed into the original Tunes file. This is why I suggest making a seperate file for them.
I also make a seperate file for tuning sessions so I can save all changes each time I am on the dyno, and still keep them organized.
Trust me, soon you will have a large collection of similar tune names. Keep them organized, or delete the ones you do not need. Or face the chance of putting the wrong tune in than you intended.