Would it not be on file with the DV? It's required for breeding, isn't it? If it is, wouldn't it be part of the dog's information in their data base? Or do they not keep any records of a dog after it is exported?
I would Email DV office and ask for a copy of the hip ratings, and if its mailed to the same address I wouldn't think there would be a problem, or if you could provide your dog's reg. no. and microchip or tattoo, I would think they could email or mail you a copy. When I was emailing DV about hips, and where the results were and how long it was going to take. It took awhile but I always got an email back.