Option to export them to pmx is grayed out, unsure if there was an step I'm not understanding. I just, export it to fbx then convert that to pmx.

.pmx is an MMD model format, not an animation format. Blender's .fbx importer/exporter has bugs and is not feature complete. I think that possibly Maya is the only software that is not buggy with ...

Learn how to bake and export your sculpted models using Blender, a free software for computer animation. Discover tips and tricks to optimize your workflow.