OK, I think I do see an error in the logic of my app and I would have to agree, that in my case, an action isn’t being triggered remotely, but something still isn’t right. I made a simpler example to show what I’m seeing. If you add a task, you will see in that list description that the ParentID-Selected column gets populated when the task is added to the list. The only time that column should ever be altered is when clicking on the task within the list. Somehow, the Add Row action is firing the Set Column action on that list once the row is added.