missing pictures in movie maker

Archived from groups: microsoft.public.windowsxp.video (More info?)

I have been working on a movie for a couple of weeks and everything has been
fine. I have just scanned some more pictures into my My Pictures folder and
when I went back to my movie, some of the earlier pictures have been replaced
with the pictures that I have just scanned. The title is still the same as it
used to be, but the new pictures is there instead. Where have my other
pictures gone? They seem to just be deleted.