Hi @Rayner1
It would not be fair for future guests for the new owner to take over your Airbnb account, as they would be using reviews you gained to help them choose the place.
You don't know whether the new owner will host in the same way or to the same standards. And they are highly unlikely to have the same furniture and decorations.
Hopefully you don't have any future guests booked once you move but if you do you will need to cancel their bookings. Call Airbnb now if this is the case so they can help you manage the process.
The new owner can then set up their own listing, take photos of the property as they will have it and then they can go live and start building up their own ratings.