I'm facing the same problem here... I have deleted and added the node again and, he works but everything else connected to him doesn't...
As far as I remember, this is the fourth time this happen and we really need a solution from BuildShip... because everytime a big change is made to a node things just stop working and we need to debug and rebuild everything by our own. We don't even receive an alert telling about the changes and explaining how to update the workflow, it just stops working. In all cases I have been alerted by my clients complaining that "the system is not working again".