I have version 69, how do I keep cookies for just one site always while clearing all the others at the end of the session? I've tried all so many combinations of settings between 'Cookies and Site Data' and 'History' without luck. No matter what I do when I enter the website address in the 'Manage Permissions' window, it disappears when Firefox is reloaded. This is across different computers of mine and even with fresh installs. This happens using full website address or short ones. Simply, all I want is to have everything clear when I close Firefox except for my Youtube cookie so that it will remember what type of videos I like. We use to be able to do this. Please tell me I still can.