Do you have the "Infernal Keys" box checked under the items tab in Trinity? I have wait timers in place as well as useobject tags for each key in every profile to make sure they get looted. Is it just with the a2 key? I'll look into this and see if I can replicate the issue.
I do, and I did see it pick up the A1 key.
It might be a one off bug, I haven't got a chance to run and watch it again to see if I can reproduce it yet. I'll definitely check it out again post XP weekend and see if I can keep an eye on it.