The Raid system has been changed from the old .xml based simple way to a new Lua script based system. Raids are way better configurable now in timing, raid-to-raid time, chances and also despawn has been added. 

Currently the timings are the same as previously. The raids will be adjusted over time if we see that something is off or not to our liking. Please give input here aswell. 

The standard despawn time is currently set for four hours. The message "The monsters are gone. The world is a bit safer again." indicates that the raid monsters are gone. 

Greetings, Alex