Also try to get the new owner to update the AIS programming to reflect any boat name change. I can't tell you how often I see boats that have been renamed but are still broadcasting an old name. There is one docked behind me right now broadcasting an old name.
All the boats I have sold that had AIS are all still broadcasting themselves as "Tanglewood", so when I sold my last one I included in the contract that all the MMSI info would be reset and the buyer would have to reprogram all of it. Then I cleared all the info before I turned over the boat. All evidence shows that you can't count on a buyer to do all that's needed, even if contractually obligated, so I erase all my stuff before the sale, and they can then do what they want. It adds some expense, but tiny in the scope of a sale. I also de-licensed software like Coastal Explorer since that's a personal license, not a boat license. All was spelled out for the buyer, so no surprises.