Lost edge style

I open a model in SketchUp Viewer that was saved as a skp file in SketchUp as a model without any edge style and in the surface style ‘Shaded with contours’. In SketchUp Viewer I open this file and change the style to wireframe. Is there a way to change this new Wireframe view in SketchUp Viewer so that the original view is restored as when I opened the file? That is, without edges?