1) Did a git pull on both node-red & node-red-nodes followed by npm update
2) Upon restarting node-red, I saw the message about migrating settings
3) I didn't think that I still had a pushbullet node in my workspace (I now use Pushover), however I found one hidden amongst a flow so I deleted it.
4) So despite now not having any pushbullet nodes in my workspaces, I am still getting the message.
However, I've had a look at my flows file, and I can see a pushbullet entry still there;
{"id":"6cb7e8d.f934818","type":"pushbullet-config","name":"Imported"},{"id":"7077f5fe.8f880c","type":"pushbullet-config","name":"Imported"}
Should I edit & delete that entry from my flows file and restart node-red?
Paul