tamed dogs and cats are not mine when i move the world from dedicated bedrock server to minecraft realms

I had tamed dogs and cats in the world created by the dedicated bedrock server, but when I move the world to windows 10 PC / Minecraft Realms, the dogs / cats are not mine any more. I cant make them sit or follow me. They behave like untamed dogs, but since they already have collar, I cant tame them again. Its weird.