ok so unfortunately at the moment my old computer has crashed on me so i bought another one. i was previously on Cummins tuning and just purchased the GM tuning licensing. was wondering if i was able to upgrade my V2 with GM tuning on the new computer and still maintain Cummins tuning like i had while using the old computer? i did download the December stable release onto this new computer also. Just not sure if the fact that im using different computers for upgrading/licensing will throw anything off??