Any 1 knows how biss works on Kaon?

I have a 570 (12.01.A5) and i can only see a biss encode channel if i put the right key on the 00 position on the Kaon keys menu.
This means i have to change the key if i change to another biss encoded channel.

Any 1 knows why and if it is a way to work it arround??

Thanks in advanced...