What exactly are you confirming? This thread is regarding the "Free" up-to-date upgrade that you get as a redemption code and so far it seems like nobody who has gone through the up-to-date program has successfully gotten through the App Store.
I'm not saying it will or won't work, but in the forms we had to fill then it listed only one serial per install so I'm not sure if Apple decided to "Microsoft" us and lock it down to be single installs.