Another thing tested: backup, restore, re-link. Did not work, BTW.
last tech-support question to whether I did the steps of: exporting from FTM, importing to ancestry.com, then linking from ancestry.com to FTM (the export process apparently corrects a lot of errors -- why not real-time? I don't know). In any case, my option to "Upload to Ancestry.com" after the export, was greyed out -- stumping me from finishing the instructions they gave me.
last tech-support question to whether I did the steps of: exporting from FTM, importing to ancestry.com, then linking from ancestry.com to FTM (the export process apparently corrects a lot of errors -- why not real-time? I don't know). In any case, my option to "Upload to Ancestry.com" after the export, was greyed out -- stumping me from finishing the instructions they gave me.