disappearing symbol parts

[mike-h]

I have a building with lots of instances of a 3d symbol, thats effectively a bay window. My building is surrounded by a permanent framework - like a big scaffold. I want to create an exploded view to show the wall and windows with the scaffold out of the way, so as the windows are in one class (all parts of the symbol are in a 'window' class, but once installed they end up in my 'external wall' class; the 'scaffold' is in a class - well 2 - of its own. When I turn the scaffold classes off, the detail disappears from the windows leaving the top and base of the 'bay', and the hole in the wall, but none of the frame...

any ideas folks?

thanks

mike

[mike-h]

seem to have sorted it by changing components of the symbol to another class. (i think!)

mike