I am about to complete the process whereby I am taking delivery of someone else's reservation. I will tell you it has been seamless so far. I logged into their Tesla account configured, gave my CC #, and paid the $2,500 with my credit card. I impatiently kept checking there account for the edit link button to go away. When it did, they received an email from the Tesla ISA which they forwarded to me. I am not sure if they ever received a phone call as they were out of the country. I reached out the next morning to the ISA, said I would be taking delivery and could they please change it over to my account. At this time the order already reflected that the car was being registered to me (which can be done at the time of configuration). She switch all communications to me directly, no longer going through original reservation holder. Said the car is not moved into my Tesla account until right after deliver. There are plenty of examples around as to how that is done post delivery. Received my draft purchase agreement today properly reflecting my name and information and delivery is now set for July 13th.