i have a model of a floor plan that uses a sketch picture to show the outlines of the floor and walls. when I export to 3-d pdf, the sketch picture is not shown. the 2-d pdf exports do show the sketch picture. I'm assuming that since a sketch only has 2-D content, that the 3-d pdf export just ignores it. attempting to form a surface or extrusion from the sketch picture throws an error: "sketch has no contour geometry". any ideas on how to get the sketch to export into the 3-d pdf?