Im doing my first model (im quite new) and im already doing the rigging. I created a curve with clusters for the eyebrows, then use the ''add influence'' tool to be able to paint the skin weight and all work perfectly on Maya. The problem is that when i do that and then i export the mesh to Unreal Engine, the face is invisible. This only happens after using the add influence tool, so it must be related to it. The mesh looks like this in UE4. Does someone know why is this happening or any solution to it?