Casual Game Finishing

When a casual game finishes (i.e. someone wins), does it disappear completely?

I had a game which I had been playing for a while. My home country had been captured, so I was on the verge of loosing, although I'm not sure the opponent had held it for long enough to win.
I got an email notification saying turn 35 had begun and when I logged on later to check my games I couldn't see it there. I looked through all the games, and tried using the link in the email and it said "this game does not exist".

It was a team game, with me on one team, two people on another team (who captured my home country) and a third team with one player who basically remained untouched in south america. So even if I was defeated, the game should have continued because there were still two teams left, unless of course this other player timed out or something.

Also I seem to remember with previous casual games, if I lost, the star from the corner would simply disappear/change to a padlock, and when I went to it, it came up with the "you have been defeated screen", although these games were probably still on-going due to other players.

Sorry if that was a bit long, but can anyone shed some light on this? This was probably my longest running game, so I had wanted to see the stats from it, and am also not sure I got the SP from it.

Hmmm...I don't play many casual games so I can't offer much wisdom on this subject. Perhaps someone else could help you.