What I did was select the cr2 file in Library; clicked on Develop and changed the exposure, then used brush for clarity on the subject. Then went to export; Files on disk, checked add to this catalog, stack with original, jpg, sRGB, quality 1'', and sharpen for screen. Then hit export. The pic in CR2 in Lightroom shows the changes but, if I go to "show in windows explorer it shows the good old "blown out" CR2 raw file. So this is normal? If I edit the pic in Photoshop CS4 or use a plugin such as OnOne it saves it as a PSD and then I export to save as JPG. When I go back to Library it shows the CR2 untouched, the PSD and the JPG. I gather that if I go from CR2 to jpeg it shows the changes in the CR2 as well but if going from PSD it does not. Man, I hope I did not confuse you as much as I confused myself. LOL