I have a bunch of credits on my MPVI and have been successfully tuning my car. I want to tune with my MPVI2 now and from what I read, credits don't transfer unless I send my MPVI back. I don't want to do that so I purchased 2 credits for my MPVI2 so I could tune with it instead. I resynched the MPVI2 and the credits show up then read the vehicle no problem but no window popped up about licensing the vehicle, only that it was an unlicensed vehicle. I resynched again, read the vehicle again but still get the "unlicensed vehicle" message when I try to write. What am I doing wrong?