Yes, it looks to me like the phone app is the main source (and that makes sense to me too) but the name change is just not being picked up by the nodes unless adding a new (or missing) node. Now that I realize how this is working, I don't mind deleting the node and restarting the node server to have the new name picked up; so, don't worry about changing anything for me. Changing names is something that is quite easy to do this way and is something that would only happen very infrequently for me.
If I want to use a node name different than in the app, I could just change it in the AC (overriding the PG3) and I have done this with other node servers. In this case though, I want the app name and the AC name to be the same for consistency and since the AC gets its names from the nodes, I wanted the app and node names to match
Yolink is working great for me. I really appreciate all the work that you have put into it
Gary