So i'm sorting photos from last summer, select a batch and open it in Preview, rotate temporarily those that are vertical so I don't have to turn my head every time, and delete those I don't like, clicking "place in trash" directly from the preview side filmstrip thumbnail. When I exit the program I'm prompted to save the changes or not. I decline, as I don't want the images to be rotated permanently, and I have to click for every single image that has been modified, which is quite annoying if I have like a hundred. Then I find that all the images that I had temporarily rotated but deleted afterwards are back in my image folder, and they are rotated, even though I didnt save the modifications, and deleted them anyway. I'm running on OS 10.8.5 and I already disable the auto-save option in the general preferences. Used to run on 10.6 and when exiting the program after deleting and rotating 100s of photos, I used to be asked once to save or not the modifications, and if I clicked on no the program would exit and no image was rotated or back after deletion. This what I would expect preview to do now! Anyone has any idea of the problem and how to solve it?