Here is what the NZ Kennel Club has about imported dogs
Registration of Imported Dogs
1. The owner registers the imported dog. This can be done at any time or age of the dog.
2. The owner must be a current financial member of the New Zealand Kennel Club.
3. An overseas Canine Control recognised by the New Zealand Kennel Club, must issue a Certified Export Pedigree for the dog showing the applicant as registered owner and giving a New Zealand address. This must be produced to the New Zealand Kennel Club. You can email the NZKC and explain your situation to them and they will give you the process on how you go about things. A list of
Contact Details for NZKC can be found here