If u r the only using X1X, then its better to do the $1 on your main account.LetsMakeADeal2013 wrote: ↑ I would not want to sign onto the secondary account on a regular basis on the Xbox One X but the secondary account is the one currently that has the $1 offer and if I go and wait til mine runs out on the 28th or whatever no guarantee I will still be able to do that deal people do with my account ... the main account.
Either wait till 28th or contact MS CSR to cancel your ultimate (though I am pretty confident $1 upgrade will still work in the next two months)