I have protection of city, under this protection, there are other smaller, when I sell a little if the buyer uses / ps allow MY_NICK and then use / ps MY_NICK remove the upper region, the city is eliminated.

It is a very critical BUG and has destroyed several cities in my server.

Sorry for my bad English.

Gonan check this out.

By using the flag non-conflict I have solved this problem.

Or I think so, at least not erase the upper region to remove the member.
Now when I add and remove the owner of the upper region as a member, it is no longer cleared.