SP save games gone

I did a search and did not find a similar problem...
I played a few missions on single player, even saved a few specific moments seperately to the autosaves.
I went on multiplayer for a while, then wanted to go back to the single player campaign.
When trying to load a singleplayer game, i had no save files to load, and could only start a new game...
Then I checked the folder at My Documents/My Games/Freelancer, but it only contained an autosave that was made because of me starting a new game, after none of my save games existed.
I don't know why they would not be there just because i went to multiplayer, or where they could have gone too.
Thanks for any advice.

Oh silly me...
Thanks for the advice, 'accidentally deleted' was pretty close actually...
It was late, my son and I were looking at mods, he wanted to play vanilla...
I moved the save games for safe keeping before mod de-activation, then forgot about it...how embarassing.
My apologies for having started a new thread, problem solved, but the advice did make me remember what I had done, cheers.

ps, my son is now playing vanilla on another pc, so i can leave the mod active on mine...