Jim, I have been following your comments in the thread with interest, and wonder if you have checked the "include in catalog" box in the Export Location portion of the Export dialog. If you do that, then you don't have to re-import the file into the catalog to use the database. Maybe I missed a comment that you have done that.
Ward: Only today, in my testing, I did just that, on the recent suggestion of someone else -- and it worked just fine! That in fact is what enabled me finally to feel that I've solved my remaining problems. Many thanks. As good as all the texts and tutorials are for this very complicated (and wondrous) application, a good number of options in Lightroom I believe are not made sufficiently explicit (at least they haven't been for me). Regards, Jim