Can't enable "use emissive for static lighting" on a procedurally generated/instance mesh 4.27.2

Hello,

I have a procedural generated bridge, and it has emissive materials on the instance mesh for lighting, but there seems to be no way to make it so those materials cast any light. There’s no lighting menu for the mesh in Blueprints, there’s no lighting over on the details for the Blueprint actor…not sure what to do here.