Never Remove Browser Extensions

  • Been searching for the last hour and can't find any information on the Advanced setting, Never remove Browser Extensions.

    I want to know how this works. Are there settings that need to be kept for items such as Firefox extensions? If I tweak a setting in the extension's settings, will it go away if i let those cookies (databases specifically) get deleted? Or are the Databases for something other than the settings on some extensions?

    I'm not clear on what happens if I uncheck that box and how it will affect, if at all, my extension's settings.