Hi Nick, those faces were just hidden - it looks like at one point you must have had those faces selected and then pushed the "hide" button?

Rhino does not support having different properties assigned to sub-objects like different styles assigned to individual faces or only some faces out of a joined solid hidden. Rhino only knows how to hide or show an entire object at once - so that's why you didn't see the same thing in Rhino, because this ability to control sub-objects individually is a feature specific just to MoI.

So to get those faces to show you will need to use a show command so they are not marked as hidden anymore.

There are a few different ways to do this - one way is to have nothing selected and then push the Edit > Hide button - that will show everything including those faces but a side effect will be that all your other hidden objects will be displayed as well. But if you use this method you can select your object, then do a Select > Invert and then do a Hide to hide all the other things.

A better way for this particular situation you've got here is to just show all the things belonging to Style = "Head". To do that, open up the scene browser and expand the "Styles" section - notice that the current status indicator for Style = Head shows just half an eye - that means that some of the things belonging to that style are hidden and some are visible:


The reason why it's a half eye instead of a full eye is because of those hidden faces. So to show everything that has Style = Head, click once on that half eye and it will switch to a full eye and those faces will then be displayed.


Also a different way you can do it without the scene browser is to select that object, and then hold down the Ctrl key and press the Hide button. That will do a special show operation called "Show subset" - one of the things that will do is to show all hidden sub-objects on a selected parent object. If you do that Ctrl+click "show subset" without anything selected it will do something a bit different than that which is to temporarily show all the currently hidden objects and let you pick just some of them to show instead of showing everything like the regular non-ctrl click does.

- Michael