I agree. However, I once saw the Order disappear from its holy city several turns after the leaves arrived. It still had the Code of Junil, and The Order was always my state religion. When I checked in worldbuilder, I noticed that it was still officially the holy city, but the Order was definitely not present. I have no idea how this happened. It might be related to my frequent use of worldbuilder that game, but I am pretty sure that is not a change that I made. I have never seen something like this happen again.