Quick multiplayer question

[fungalreason]

When playing a network game, does "save & quit" submit the turn file? Or does that only happen when you hit "End turn"?

I think there's a message saying that you have to actually end turn to for it to get submitted, but I just want to be certain.

I'm confused because the next time I log in, it doesn't show the normal "X" on my nation. I get a message box saying that my nation's 2H file has already been submitted.