ADora Ok, turinng off face recogniton is easy. There is an option in “Library locations”: https://tonfotos.com/docs/library/setup/
However, I am afraid program is not supposed to overwrite your tags, regardless face recogniton is on or off (that I why I changed topic to the “gugs”). Program is not supposed to do anything with the files until you clearly tell it too. Tags are stored in file metadata, so program under no condtions should change those without your comand.
Can you please describe step by step what you have done and what is the effect? We need to get to the bottom of this.