Hi. I have some old videos transferred from VHS. I need to change video settings on a part of the video, but not all. I select the part of movie and change "brightness" for instance and then "SAVE". I go on from there to select other portions of video to make changes. However, when finished with editing the entire video, I SAVE AS. When I open the video another time, the edits will not have been saved. I even cut out these portions of video and edited them alone, then I put the new edited video back onto the original. The changes did not take affect. It seems when I had Leopard, that was not a problem. Now I have upgraded to Snow Leopard.