How can I save DNG without discarded details?
When I drag DNG file into PS, before the file is opened in the native PS window, i get the popup window of Camera Raw, where I can crop/modify picture, and RE-SAVE it as DNG :

However, when I re-open the saved file again, and click crop, then it reinstates in the INITIAL, THE ORIGINAL PICTURE...
How can I avoid that? When I modify/crop the DNG and save it again as DNG, I want that last DNG was the final file (so, I want that cropped area was lost forever)
