Ok, I sold my old truck and got a new mega cab. Same year model 2006. Auto, 4x4 etc.

My question is this, I was running the CSP5 tunes on my old truck, and I had done the upgrading one of the approved stock tunes to the CSP5. Do I need to start all over with the new truck, by flashing it with the clean stock tune that is upgradable and then upgrade that tune and flash it again, or can I simply change the VIN in my tunes I was using on my old truck with the CSP5 tunes and switch and flash them on the new truck and go from there, thanks!