[Rusty's Momma]

I am curious ,we just got Rusty back in December. After purchasing him we found out he was registered under ACA. Rusty is an awesome dog and we could care less if he was AKC or ACA. We are planning on getting a female Yorkie and wanted to breed the dogs. The dog I found is registered AKC, I just found out I can dual register the AKC dog with ACA but not ACA to AKC. I hope I am not confusing anyone. I was just wondering how the rest of you were registered. Your poll response would be appreciated.