
It's surely up to the owner to keep count of wins and how they affect the classes they want to enter. If they are caught out, then they'd forfeit those wins taken from classes they had won their way out of. However, with closing dates so far ahead, when campaigning a dog it's all too easy (one hopes!!) to notch up the wins after entering the later show.
Is it possible to move a dog up to a higher class after submitting the entry, in the UK? I seem to remember a dog who has taken the right number of points to become a Champion before the show, could be moved into Specials out in Canada.
I guess you could lodge a complaint, but you'd need to be absolutely certain of your facts. We did this once, when our bitch took a RCC to a bitch we later discovered hadn't been registered with the KC (oddly both bitches were imports!!). After a looong time, the KC upheld our claim, and our bitch was given the CC - that was wonderful of course, but in fact in the meantime she'd taken her '3rd' so we were actually denied the fun of taking a 3rd in the ring!! And by that time also, we'd retired her in favour of maternal duties. We did show her again a couple of years later and she took RBCC Crufts that year.