Neat, found a thread with actual details, as well as where the law exists (it's buried in the MVAA).
https://forums.beyond.ca/threads/351...a-vehicle-home
edit - above thread is a great read, contributions from registry (dannie) and insurance (Masked Bandit) experts, as well as legal analysis.
Specific to the registration portion:
Talk about fucked up wording. The first part notes the registration year (odd here because you can actually register for 2 years now) meaning registration must be valid. The second part only talks about registering the new vehicle in your name and not a transfer, so it doesn't matter if you register plate A or plate B. It also looks like the 14 day rule is from when you BOUGHT the vehicle, not when you sold the vehicle. You don't actually even have to sell the vehicle.
What's even more interesting is that the MVAA referenced has been repealed and replaced by the TSA:
http://canlii.ca/t/81w5
The TSA doesn't have any reference to the 14-day rule, so I have no idea if the 14-day rule is even valid since May 20th, 2003 when it was repealed along with the old MVAA.
@
dannie
referenced the updated TSA but I can't find any reference to the 14 day rule.