so i found some pretty info that might help others out. I found this youtube clip from a PREVIOUS bmw technician who is showing e70 owners how to replace the battery. If you scroll to the very bottom of the comments, registering/coding the battery is ONLY required when the cold cranking amps and your amperage on your new battery is different from the one you are taking out. This info goes pretty hand in hand with the info Basora posted up.

BMW X5 E70 X6 E71 Battery Removal How to DIY: BMTroubleU - YouTube

But all this talk has got me quite curious on how to use the INPA program should one change to a different battery. Going to see if i can find info and i will report back if i do.