jim01403 wrote:
When you import the jpeg the first time (or even with any of the subsequent re-imports of the exported files), are ALL the sliders in the Basic Panel in the Develop Module at zero? They should be.
Yes, all the sliders are at zero, as they should be. There is a difference in the histogram of JPG1 and JPG2. Histogram of JPG2 is slightly moved to the left. That´s why the second image is darker.