and what is even more strange is that most dealers do not have these parts in stock, they order them. So why would dealerships order the old parts? Why are old parts even available? You would think the old parts are no longer order-able or that the system just knows to sends the new parts.
makes no sense
How do you know most dealers were ordering the old parts? That’s an incorrect assumption. Dealers can source parts from other D2D or from FADs.
In regards to the new part numbers, those are the ones that need to be ordered from Ford.