meanman

hi i have been playing on call of duty for 6 months and i have a favorite server saved that i play on ,my problem is that i cant see it anymore under
favorite list and i cant see it if i try to join from the internet i know the ip so i tryed to add it to favorite server again and it says that i already have it as a favorite luckely the guy who runs the server also has a join link on his web page so i can join from there i just need to know if anyone can tell me how to put it back on favorite in the game thanks