Update! When I got home last evening, I tried again. When I altered the photos from within an album, I now get the "saving changes" dialog box, and the sliders in the Adjust box move to the center of their line. When I went to the "roll" and made edits, I did not get that dialog, but the changes seem to have "stuck". However, when I go back to look at the Adjust box, the sliders remain where I left them, not back in the center. Is this the way it is supposed to work? No problem, as long as the changes stick, just wondering if things are still messed up.
Thanks again!