If you are going to change the name of a proven animal, what's the point of even keeping pedigrees? You can call an animal anything you want but why change the name on the pedigree? Since rabbit pedigrees are so dependent on the honor system, it seems that much more important to keep the name on the pedigree.
FWIW, you can change the name of an AKC dog, provided they don't have any registered offspring. (I think titles may affect that too, but I'm not sure how.) Part of the reason we have so many different dog registries in the US, is b/c the AKC started requiring DNA tests on dogs who sire 7 or more litters. A lot of dogs had their AKC registration called into question and other breeders switched registries before their dogs could be tested. The alternative registries will give full registration based on AKC pedigrees, despite failed DNA tests or limited registration.
FWIW, you can change the name of an AKC dog, provided they don't have any registered offspring. (I think titles may affect that too, but I'm not sure how.) Part of the reason we have so many different dog registries in the US, is b/c the AKC started requiring DNA tests on dogs who sire 7 or more litters. A lot of dogs had their AKC registration called into question and other breeders switched registries before their dogs could be tested. The alternative registries will give full registration based on AKC pedigrees, despite failed DNA tests or limited registration.