Don, use "save as" then you can name it anything you want. The original image I posted file name is shot48.png, on the modified I added marked, so the new file is markedshot48.png. Like I said you can name it anything you want, just leave the file extension. Using "save as" and giving the image a different name allows you to keep the original image, as you found out if you just use "save" it will replace it.