[Question] Shutdown Notice for Restart

So, I play on Angmar.

We got a message saying every world would be shutdown, except Angmar and Mordor. However, Angmar still got shutdown. No updates on why, if that was a mistake or when it's coming back.

Is this kind of thing normal? I mean, it sounds... weird, at least, but I haven't seen people complaining about, so I wonder if it's something people kinda "accept".