database migration in 8.3.0: missing person

[Marcus Winston]

Hello all,

I'm using digiKam 8.3.0 on Linux (AppImage), and migrating the database 
to MySQL Server on a NAS. In the process, I have found a "missing 
person". That is, one of the people in my "database" (I use that term 
loosely, as I'm not sure the right word) is missing. There are 2700 
pictures with this person's face identified in the SQLite version of 
"database". In the MySQL, after migrating it to the NAS, this person is 
entirely missing. All face tags with this person are gone.

Is there any way to debug this? I don't really want to go through and 
manually re-train digiKam, and manually re-label a bunch of photos. It 
took me several hours to train it so far.

Thanks.

MarcusW