So, after several patches we still have the problem that people can get out of the map and into other paths. CoE people are STILL able to get through doors into all other paths, arah people can get out of the map and as far as I’m aware people can still get out of the map in CM and get back in, skipping content along the way. (haven’t done any CM in about a month).
There are 2 extremely simple things you can do to fix both of these issues forever.
1. Incorporate a ‘dead zone’, anywhere players aren’t meant to be, they are instantly killed.
2. Separate the dungeon paths into separate instances rather than having all of them on the one map. The group comes in, chooses a path and they are reloaded into a separate map with that path.