Just came back to EB2 and noticed this. I took that province and noticed that the building was destroyed, and grepped the script to confirm it was scripted, but I don't see anything about it in the building description or from searching. Well twcenter is down for me atm so maybe the info is there. I vaguely remember having to delete buildings a lot in EB1, but IIRC the game would usually tell you what was going on somewhere. Maybe I missed it.