I use Blender to produce small props for Daz scenes. Recently, I made a test tube rack for a chem lab scene, exported it from Blender as an .obj file, then imported it into Daz Studio, to find that the holes for the tubes had been filled with extra polygons. The obj file imports back into Blender and into Photoshop CC 3D without any problems which is why I am posting this in the Daz forum. Can anybody help with this? I am using Blender 2.8 and Daz Studio 4.10. The images are the original model(background) re-imported obj file ( foreground) in Blender and the imported obj in Daz Studio.