How to do migration stats from one server to other ts3 server?

Button is not active in management panel.

I tried update dns, but received this answer (after delete of new server claim):

We could not find the server you requested. Some possible reasons for this error include:
The URL for this server was mis-typed or incorrect.
The IP address, DNS name, and/or port of this server has changed.
This server was deleted, or has not yet been added to GameTracker.
Please visit the forums if you continue to have problems or have any questions/comments about this service.

Old server
http://www.gametracker.com/server_info/78.46.191.108:9987/
New server
http://www.gametracker.com/server_info/78.47.20.211:9987
Now I added manually new server, but i want to fix and use old stats info for new TeamSpeak 3 server.

Voice servers (team speak, ventrilo, etc) do not have player history on GameTracker. Therefore, the option to migrate historical player stats is disabled.