I noticed Real Pop settings have been applied to 2 buildings:

Oil Industry Workers’ Barracks
Petrochemical Plant

I did not make those changes myself, and would love to find out how those changes were applied, but I'm OK with people living in the Workers' Barracks.

I don't want any residents to live inside any Petrochemical Plants though.

I now have 3 problems:

A) I can't apply custom settings to the Petrochemical Plant, to reduce the amount of households to zero. I've successfully applied custom settings to other assets before, doesn't work with this asset.

B) The Oil Industry Workers’ Barracks has disappeared from the Oil Industry buildings menu.
The Oil Industry Main Building, and Oil Industry Maintenance Building are still there.

C) The Petrochemical Plant has disappeared from the Oil Industry buildings menu.
The 3 other Processor buildings are still there (Oil Sludge Pyrolysis Plant, Waste Oil Refining Plant, Naphta Cracker Plant).