Baty
dayz update actually shoot the favourites. I closed the game more times now and added the DayZ Underground EU server several times but it is always gone at the favourites after restarting the game. The server is also not to be found in server lists ingame. The server is online since more than an hour, I already played on it too (https://www.gametracker.com/server_info/37.59.8.80:2602/) but you can only find it via direct IP search 37.59.8.80:2602. Still don't know what happened.
EDIT: I also tried out the "repair" option with steam for looking for broken data, but still no result.
Guys: you have to search your favourite server at https://www.gametracker.com/search/dayz/ and copy the IP from the end and paste it into your game to look directly for IP. you will find the server then :-)
EDIT2: Nevermind. you have to choose "Community" on the top of your browser *fail* xDDD