Hi @Mikael_Mayer !
I’m not entirely sure but this might have to do with how the doc you copied was build. There might have been “examples” as stated here, when Coda launched the Clear Non-Referenced People for Copied Docs in June.
As of removing those unwanted people, I’m sorry, this might be a stupid question, but can’t you just delete them ?
Or maybe just delete that field and create a new People
field ?