Rewritten

Rewritten are the rarest category of people. They are characters who have been Written out of their stories or who have been changed so significantly from their original form as to become a separate person.

They fade away if their original records are not preserved. Most don't even have enough records to prove existence. Which is the main reason they are exedingly rare, there is also the possibility the will end up in a new role later in their story and don't need extracting.