Many have been assuming that cars were produced in more-or-less the correct order, but just some group of folks were skipped over when assigning cars (from the "pool" that arrived) for delivery.
HOWEVER, cars are probably linked with the Orders that caused them to be built (and their future owners), long BEFORE actual manufacturing begins.
So, it is QUITE POSSIBLE that the correct "owners" are getting the VIN assignments, and that a whole large group of ORDERS were "lost/overlooked" and never even SCHEDULED for production!
That would explain why it is difficult for NissanUSA to take an in-port car away from its rightful owner and assign it to a person whose Order was never even submitted for production, or even scheduling for production.
If this is the case, the cars for the "skipped over" folks were never built!