How to lightmap terrain with point lights

I'm trying to get my scene to lightmap properly, but all the point lights are not getting baked into the terrain. Point lights with the same exact settings are baked into objects with geometry, but not so with the terrain. My point lights are set to lightmap static with hard shadows and lightmapping is BakedOnly. Bake mode is Dual Lightmaps.

One thing interesting that I am noting is that when I'm in the lightmapping window and select the Scene Filter as Terrains, it doesn't show any objects at all, even though there is clearly a terrain in my scene. And that terrain gets lightmapped with the directional light as it should. I'd be interested to know why it doesn't show up in the scene filter and whether or not that has anything to do with it as well.