Replays disappeared?

I was playing against my friend, and the first few games were really good, so I saved them. Now I come back online to upload, all mysaved and unsaved replays are gone…

Did you exit the game/turn off your console?

If i understand correctly the replays stay unless you leave the game or turn off the console(not sure what one)

So before you turn off you have to save them if you leave unsaved they will be gone

Turned it off because the game made my PS3 freeze. However, I saved about 8 of them before this and really wanted the first two.