Quit and save

I am trying to get Firefox to "quite and save", but no mater what I do, when I start it up again, the windows that where saved do not auto load. Anyone got any ideas please.
Matt
Matt
Flight Simulator and other chat
https://forums.simviation.com/phpBB3/
https://forums.simviation.com/phpBB3/viewtopic.php?f=11&t=30864
I forget where it's at but there's also an option to clear all history when exiting? If it clears the history it probably doesn't retain that information?
just a thought.