Looks like you observed another incidence demonstrating that the rule that AMHA horses cannot 'legally' be over 34" is WIDELY violated and/or ignored,and in virtually every aspect of the industry. As the OP saw at the auction mentioned, these violations are increasingly OPEN(go to just about any show....or look at 'for sale' ads that state that some horse still HAS A papers, but that HAS OUTGROWN them. Yes, the A papers ARE needed to 'hardship' into R; if you have a horse you feel is going to go over for A, why not go ahead and hardship it YOURSELF, THEN offer it for sale with 'legal' papers? (If it then DIDN'T actually 'grow over', it is a more valuable double-registered horse--and YOU know you've acted responsibly and with complete honesty. )I have known VERY few miniatures where it was not clearly evident, from babyhood, that they were going to, or VERY likely to, go 'over' for AMHA; if you bred and/or raised a horse, you should be the one aware of this, and you can act accordingly and in a timely manner. I suppose I must add that this is "just my opinion".
There ARE those who follow the rules, who turn in the papers of their horses that have grown over(in either registry, BTW)--but it is my opinion that those folks are pretty few and far between. I have immense admiration for those who DO adhere strictly to the rules, but IMO, they are nowadays a minority.
Flame away, if you must--I don't need a flamesuit; my old hide is tough.
Margo