Lightmap issue with Polybrush assets

Whenever I bake my lightmaps for my scene, all is fine except the specific mesh that have polybrush on them. I have a modular floor that I have some of the floor pieces with polybrush so I could paint in some other materials. Only the floor mesh pieces that have polybrush come out black. Everything is set to static.

Is there a Polybrush setting I need to set in order to have lightmaps bake on polybrush meshes?

 

anyone? I can't seem to find the answer to this anywhere.

 

There is a mode setting for the Polybrush mesh script, it gives you a choice between something like "Override Mesh" vs "Add Streams". Make sure you have "Override Mesh" picked; it's not as efficient, but apparently it is required for light mapping to work.

That said, I have had some issues come up with lightmapped Polybrush meshes that I was only able to resolve for good by just exporting the painted mesh as a new mesh asset to use while being able to remove the polybrush script entirely. If it still doesn't work after changing the setting, you might try that as well.

 

Thanks @Giometric - that was it!