Hi,
Please check that 3D solids in your drawing doesn't include Solid History:
Remove the History of a Composite Object
1. If the Properties palette is not displayed, select any object. Right-click the object and select Properties.
2. Select a composite 3D solid.
3. On the Properties palette, Solid History area, under History, select None.
Also check that system variable SOLIDHIST=0
Maxim