I originally thought AP came as an addition to production run each time a new mold is used but I dont have proof anymore since the brown cardboard packaging that came with the Gimli with two numbers was actually for Galadhrim archers therefore it was incorrect. I go with the theory that they start shipping AP when the production run had sold out, I dont agree that they start making additional ones because
a) the mold has finished its run and wont be used again
b) the logistic of having to restart a production run for the sake of a few statues is not cost effective.
I also bought a Newborn Uruk from NZ recently that was numbered so why hasnt that one be an AP if it was meant to be sold out?
NZ also stocked numbered Gimlis previousely until it was sold out a year ago, the last stock they had a few months back I believe were all or mostly APs. One thing I did noticed with my Gimli AP was that although it was sealed and packed like new it didnt have the fresh smell of polystone. Like all the APs its probably sat at the artist studio, shown to cast members, displayed at convention centres, etc, and being the property of SS these were shipped back to SS warehouse in China then reabsorbed by NZ warehouse.