Is this possible?

I bought an xbox with a fortnite and rocket league bundle . I want to claim the bundle on a different account but when i try to do so it says claim the bundle with a different account . i have already claimed the bundle on one account but i do not use this account anymore and so i would like to sort of unclaim this bundle from this account and claim it on my other account. I have tried to remove the account on my xbox and then claim the bundle on my desired account but it still says claim with a different account even though there is only 1 account on the xbox after removing the other one. I have tried many things but nothing seems to work. I am prepared to delete my epic games account to do so but i am worried that by doing so the bundle will be unclaimable by any account and will be deleted along with the account. please help

:)