Saved Game disappeared

I played for about an hour, saved, logged off, shut down my laptop, and switched wifi (went home, same laptop) when I logged back on, the game I had been playing was gone. Admittedly this is from the GUI, I haven't been able to find the save files at all. Thinking it was a wifi tracking issue, because that's happened before and a trip back to the other wifi usually fixes it, I decided to get my hand in at starting from scratch. After playing for a while I saved, logged out, and restarted my computer. Out of curiosity I checked to see if the old game had come back only to find that the new game I'd made was also not there. Is this my system or yours?