Hey Everyone,
I was working with Kitbash models recently and didn't really find any one-click solution for converting principled shaders INSIDE a material builder node.
So, I came up with a short Python script to save some time and do the task automatically. If you need it, code is available at https://github.com/mirodigital/Kitbash_Octane_Converter
Just add the code as a new Shelf Tool, select the Material Builder nodes and it'll save the Octane Materials to /mat. It'll also check for Displacement, Opacity and Emission and only adds these nodes if needed.
I'm by no means a Python expert, but hey...it saves time and works!
Chris.