I bet you might need to take the composition, delete the old parabox nodes, and then swap in new ones from the node library. Not sure if it will help, but I've had something similar happen, and that worked.
BTW, thanks again for this node set, Karl!!! It's really great.
You (or anyone for that matter) might be interested in some of the things going on in this editor; just saw it a couple of days ago and was impressed at some of the ideas for GUI objects that pop up to make enhance editing.