OK.. I've got a question about what my ECM - and or a hypertech

I went to hook up a hypertech hyperpac.. -- enter name - etc.. so far so good... then it looks up my vin.. Vin checks out..

***** but then i get this. *****

For the calibration ID .. it displayed... multiple calibration ID's

OK... i backed out of the program.. no way i was hitting the button and have this thing render my ecm lost in space...

The ECM was just put in and programmed at the dealer in february 2009.. so i know it's stock..

What's going on.. any GM techs on here have a clue??

Thanks

Probably has to do with the fact that there were a few different CALs and OSs in '06. the biggeest difference is the LLY and LBZ tuning that came out in that year.