Split "Save & Exit" in single player to separate "Save" and "Exit" options.

You may add an additional "Save game?" pop-up dialogue when the player clicks exit.

Why?

Well, in single player you may want to save at a certain time and replaying from the start or the last autosave may be really tedious.

Of course you could just save and exit, but in that case it's still tedious because you have to first save and exit and then reload the mission to continue playing.