So here it is – the error report is kind of messed up.
For the first 2 people with “sex unknown” I changed their sex to female – which they are. Since the report was generating in FTM, I made the change in Ancestry to prevent messing with the FTM tree while is was working.
When the report was finished, I also made the change in FTM. I then synced the trees.
Guess what? Those same 2 people now show up on the new data report as having duplicate events! Guess the category yet?? Sex!
I assumed when I synced that it would notice that both trees have the sex as female. Guess again!
Maybe some of my merging duplication isn’t necessarily my doing!
This is going to be a long haul! I have decided changing it online is easier if I will need to search for supporting documents but things like sex changes are easier in FTM.