This article covers the steps needed for migrating a domain's DNS traffic to UltraDNS.
1. Add <domain> to UltraDNS and then confirm zone files uploaded properly (remove old SOA/NS records).
2. Contact your registrar and add the UltraDNS name servers and remove the old provider's name servers
3. Ensure the previous name servers remain running for 48 hours after the change at the registar