Oblivion Mod:PCS Library/Mod persists even though uninstalled or disabled

Problem

Uninstalled or disabled a mod, but can't leave a room modified by it; or some other aspect of the mod persists.

Cause - Wrye Bash Patch file

Mod records were merged into the Bashed Patch file. The mod ESP may or may not have been ghosted.

Solution: "Ghost" the mod ESP file in the Wrye Bash "Mods" tab, and rebuild the Bashed Patch.