@Bill1248
it is not possible to transfer reservations to another account.
They must cancelled (but penalties are involved) and rebooked by the guests (if they are willing to cooperate).
If "old" host agrees you could temporary act as a co-host / primary host for the excisting reservations.
But payouts will be made to the "old" host and if something goes wrong the "old"host is responsible, so not recommended.