Let me make this as clear as I can:
There was never actually a waitlist.
Waitlist = Year 3
Year 3 = Waitlist
You'll just have to imagine year 3 is ~units 501-750.
If you received the "waitlist" e-mail, you were always on the allocation list. Always. There is nothing you have to do at this time, and you will be contacted eventually. Everyone that got a "waitlist" e-mail subsequently received a "you're getting a car" email. From that point forward, you are now just waiting to begin your order.
The only reason that the concept of a waitlist even existed was because at the time the race program had only been announced as a 2 year program, and Ford did not want to announce production cars beyond the timeline of the race car program. Once the race program was confirmed for the two additional years on July 2nd, 2016, the e-mails confirming the additional cars and waitlist-->allocation conversions were sent out on August 19th, 2016. It was word games, and nothing more. They knew when they sent you the waitlist e-mail they would shortly thereafter be congratulating you on getting a car.
It boggles my mind that this remains unclear. Part of it is just poor communication. IMO, it was not a great idea to issue this communication in this way, and an even worse idea to not follow up for so long, but I digress. 2 guys that went to Le Mans in 2017 actually didn't know they had allocations, and obviously in RaceDeck's case (and likely others) it remains unclear, which is crazy.