This is a mod that was originally created and released by @Mereth, but the capability was later included in the 'UI Enhancements' mod, and therefore this mod became somewhat deprecated. However, UIE hadn't been updated in a while, so I updated mereth's original code to include the 'Locked' filter and now the functionality works again. Also, I thought that this mod would be relevant for those that only wanted the save server browser filters feature, and nothing else. Usage: Install mod using PAMM, then select the Multiplayer -> Custom menu option and select the game filters that you like. That's it! The next time that you enter the multiplayer server browser, your filter selections should be the same as before!