HI @E.A.X ,it’s good that you are moving to UEFN because it has more tools so you can improve your island designs , unfortunately what you want to do is not possible because the maps are linked to the account in which they were created and it is impossible to transfer ownership due to security issues and / or fraud , what you can do with a new account is to work as a collaborator and publish with the original account , the same with the hyperwallet problem, epic requires that each account has its own creator verification , so it will not be possible not to have 2 accounts.
On the subject of the islands ,I have not found documentation on how to move islands from xbox to pc, but maybe it works , then I leave you a video of how to move your island from 1.0 to UEFN and documentation of how to work as a collaborator and how to Import islands from Fortnite , otherwise you will have to recreate the islands from scratch inUEFN.
