Only by saving in neutral format such as Parasolid.
You will lose all intelligence and features from the model.
If the original was a sync model I suppose it doesn't matter that much, but it's a pain if the model was traditional type.
None of the 3D cad modellers will save as earlier versions and maintain all the intelligence.
bc.
2.4GHz Core2 Quad, 4GB RAM,
Quadro FX4600.
Where would we be without sat-nav?