The Canadian Kennel Club have at least four sites that explain about the microchips so I don't see why they would have to update anything. Everyone I've talked to knew about this since the changes were made. There are also other areas in the kennel club where this is mentioned.

Maybe the people you ordered from thought you wanted to register the pups with the Continental Kennel Club, since they were white shepherds.
More than likely this is where the whole mix up originated.