Save State Issue

[Potato]

I recently saved over some old save states but when I went to load the new save states they would load the old ones instead. The little screenshot shows the new save but the old one still loads. Also a ppst.tmp file has showed up in my savestate folder, the time it was created matching the time I saved. Is there any way I can recover my saves from these, TMP files, or am I screwed?
thanks