I was in a battle in bedlam, and got this:
It only had 3 people for like 10 min, but I had no idea it could do that. It let me rejoin a different bedlam a right after, so idk what its issue was 
This gave me a new question: how long can you stay in an old bedlam server after the map changes before it kicks you out? 
Iâve gotten those messages too, sometimes while in a mission or raid. Probably maintenance related.
As far as staying in a bedlam map after a new one kicked in, the longest I hung around was about 20-25 minutes, chatting with another player. You could probably stay indefinately as long as you pay attention to the inactivity timeout warnings.
BTW, itâs incorrect to say youâre in a âbedlam serverâ; a server is a piece of hardware running multiple game sessions. We often have 2 or more bedlam sessions running simultaneously; one fills up, and a second is started. On the same server, other active missions/raids/brawls etc. are also running. Thatâs why high-end servers are critical for intensive gaming applications when you have a large player base.