Hello @SamGoldFisher and @reomalley16,
I am currently struggling with the exact same problem. I am so glad having found your post and your helpful answer here!
However, since I am quite new here using CuraEngine, I don't quite know how you @SamGoldFisher exactly convert your log into the output.def.json file. How does the format look like if I convert an "-s support_interface_extruder_nr="0" into the def.json file? Am I supposed to do that manually for all settings or is there a more elegant way?
Would be great if you could proide me an example of your output.def.json file. I would be so grateful for that!
Thank you very much in advance!!!