I did this a few hours ago. Once I finished accepting the loan offer from my bank, they provided me with a Dealer Funding Request. That's the form you send to Tesla which connects Tesla and your bank so they can send the funds to the right place. My SA told me to send that form to their center's support email with the RN# in the subject line. They processed it within an hour. There was no change on my account page.I talked to someone on the phone Monday, and I had some questions about a form my lender requires the dealer to fill out. They said my SA would need to take care of that, and that's when they gave me the person's name and email, and he also said he'd make a note to have my SA reach out. I emailed the form to the address he provided, asked some questions, no response. Luckily the dealership is close by, I might swing by a little later this afternoon and see if I can catch someone who can actually help, give me some advice, hell, maybe even a phone number to call of someone local.
Just waiting on the notice to actually schedule delivery now.