While working on a greoup of sunset photos I noticed as I moved between the photos The develop module had sliders for Shadows, Whites & Blacks. Normal LR4. Then I clicked on a deffrent photo and it had a slider for Fill Light and Blacks, as per LR3. I thought I had updated all of my catalogs from 3 to 4, could this be the problem? I know a lot of the photos were 1st inported with LR3. Any help?