Exporting Path Data to XML and Compiling to BYAML - KillzXGaming/Mario-Kart-8-Blender-Path-XML-Exporter GitHub Wiki
This part is really easy. File - Export - Mario Kart 8 XML Path Exporter
Save it anywhere you'll remember. Then use a blank byaml, like this
Drag it over to yamlconv and it'll convert to XML. Open the XML in notepad ++ or similar.
With the other XML we made before with blender, open it and copy all the contents, then paste it all into the XML
Finally drag the xml back to yaml and rename your byaml to course_muunt.byaml.