Dennis, I just looked at the questions about the Invalid Edit Token problem. I think I understand those.
You know how, with a multi-user database, if 2 people have the same record open and 1 makes a change and saves it, then if the other one makes a different change and saves it, they will overwrite the first change? WikiTree managed to eliminate that problem by tracking the time stamp on the record when you opened it. If you try to save and the time stamp on the record is later than when you opened it, they give you the message about edit conflict instead of writing your change.
I don't believe they have a user friendly error trap for merges, which results in possible edit token error messages when multiple people simultaneously have the same merge page open. Of course, since I have not seen the WikiTree software, I'm just speculating here.