I've been a long time OmniFocus user, but there's been one thing (that I think might be a bug?) that's been driving me crazy for a long time now. I have a couple of Single Action lists that I use as buckets to hold varying single actions based more on areas of responsibility. I don't want those buckets to go away, so I try to un-check the "mark complete when completing last item" in the inspector, but for some reason after a period of time, it automatically gets checked again. Am I doing something wrong, or am I trying to get it to do something it's not designed to do? Thanks.