To Exchange Kontakt 1 GPO serial number for a Kontakt 2 serial number:
Go to the NI Service Center.
If you don’t have the NI service center installed yet, there is a link to the download area on the NI webpage when clicking on the old registration tool. After installing and registering GPO the user is guided through the update process by the Service Center.
Service center lists the available updates for GPO. Clicking the KP2 GPO update will link the user to the to webpage where you can request the KP2 serial number.