[CovKid66]

You'll still be flashing a new ROM from T-Mobile then. In which case the same applies...be very careful when restoring from any kind of backup program. Backup/restore is great if you have to do a hard reset because something screwed up, or if you lost some data and need to get it back. It's not recommended when flashing to a different ROM.

If you're not going to be flashing that often just go with the reinstall of everything. If you are going to flash on any kind of semi-regular basis, it's worth looking into something like SASHIMI.