OpenMarine

I just noticed on the Node-RED website that a new version of Node-RED came out on June 27. 

I also saw on the Raspberry PI Upgrade instructions that custom nodes would be lost. https://nodered.org/docs/hardware/raspberrypi

Am I right in assuming that I should NOT do this upgrade?

Do not worry, I have updated and all seems to be ok. I am programming a major openplotter update soon to upgrade dependencies and raspbian packages.