It seems to be a problem with the exporter. One thing you can do, is go and download Blender. www.blender.org It's a free 3d program with many exporters. Import the modified object into Blender, then export it to your vrml format. Make sure it's VRML97, not 1.0 in your case.

Have you looked at this? https://robotsdontbleed.com/wacko/wak...nediting#TOC_8

Hope this helps.