You need to use the quicksave / autosave system to generate a dedicated autosave slot # save at the beginning of the first time a new game is played.
I've explained this in loads of threads already.
Please have a look around the forum. I think the last time I mentioned it was in a thread from about a month ago. I forget the thread title...
* edit:
http://www.visionaire-studio.net/forum/thread/reseting-whole... (not exactly step by step in-depth, but it should suffice).