"Self (archiveFootage)"

Further to my other issue with the "archive footage" attribute (recorded in another post), I've also noticed the following credits appearing a lot:

Self (archiveFootage)

(The "archiveFootage" part appears as part of the character name, not in the attribute field)

These mostly seem to appear in historical documentaries about the British and Russian royal families, or TV series about disappearances.

Luckily the "archiveFootage" appears as a single word, so I have been able to use Google to identify and correct most of these (there were previously a couple of hundred!), but obviously I'm concerned that someone is still doing this, so I have left these ones untouched:

https://www.imdb.com/title/tt9741124/fullcredits

Can a member of staff please use this to identify the original contributor and make sure it doesn't keep happening?

Many thanks