
You let the secretary know of any errors so they can be noted, this may include the owner details spelling mistakes in your or dogs name etc.
Unless previous wins were important ones like qualifying for stud book number etc just forget it and make sure things are correct in future. If a win did quality for something important I'd suggest writing into the kennel Club explaining.
A friend of mien due to moving house ahs been showing her dog for three years which she had never transferred into her name from the breeder. When he won a stud book qualifying award the Kennel Club were quite good and sorted it out for her, and she kept the award.