[BamaFan121s]

It is my understanding though that the dogs would have had to have been eligible for registration with AKC, but for whatever reason, were not registered by the breeder. Not simply dogs registered with another registry. Alternate registration alone is not enough....the AKC lines have to be traceable. You have to have the AKC reg #s for both the dog's parents. So if all the OP has is the dogs info through APRI, then registration of the dog would be denied by AKC.
Also, the dogs original breeder would have to give consent and AKC would verify it, including for purposes of limited vs full registration--i.e. the dog was not placed on limited registration and the breeder didn't without registering them purposely.

Does that make sense? It's very misleading. In many cases you see people trying to use it as a loophole to get their dogs AKC registration when the breeder never intended that to be the case. Also, by misleading would be owners who may be under the impression that getting their dogs registered with AKC is possible when it's not.