I have quite a few domains that use the DNS hosted on a Plesk-webserver. I tried changing the TTL to 9600 because I need to change an IP soon, and added 1 to the serialcode. After a few hours I checked again and the TTL was back. I want to change the TTL for all sites on the server. How do I do that? I guess Plesk uses some kind of domain zone template that I can edit, but where do I find it?