0411 Swap Credit Question

Awhile ago I bought a junkyard P01 - 0411 ECU that was in a 2002 Chevy Avalanche. I have a 99 Tahoe 5.7 Vortec in my 99 Astro that has been there and running on the black box ECU for 6 years now and I am replacing it with the 0411 with an 02 Chevy Express tune. I think I made a rookie mistake in licensing the Avalanche ECU so I could bench tune it before I installed it. I thought I could copy and paste the Express data over to it but now I think I should have licensed a 02 Chevy Express tune and applied that to the ECU first.
If I now try to write the Express tune to the 0411 ECU and buy 2 credits to do that, is that all I need to do? I don't want to spend any more than I have to.
Thanks for your help.
Bob Maassel

This requires 4 credits total. 2= junkyard pcm
2= express van tune. Your halfway done finish up.