Hmm reverted that change back. Changes apoc guard timer to not grouped with other mobs they are just 2 mobs alone right? What I think is happening is the mod expects you to go ooc between every group of mobs. If you chain pull and don't go ooc then it will start 1st grouped timer but ignore all the rest. I tried to fix this but it caused a zillion timers (1 for each mob of a group) which would mean we would have to change the triggers slightly so that only 1 unique mob per group started a timer. So for now reverted it while I ponder it lol.
With dev mode on are you seeing this message: "The party/raid appears to be OOC" and then "Processing Timers" and if so do you see something that starts with "Discarding info on" during the attumen trash?
Hmm just had a thought do you ever go out of combat on your way to Attumen? What I am thinking is all the timers for attumen depend on you going out of combat to be started. If you never go out of combat they will never be started.