Purge classes in General Discussion Posted June 7, 2016 MH, first check to see if in fact you have made everything "None." Select a class in the navigation window, delete it - and if it asks to reassign objects, there are objects in that class. They could be in a symbol or a group. The procedure to do what you want is actually simple. Open the class editing window, expand all groups of classes (right click on a triangle and select "expand all"), select all the classes you want to delete using "cntrl+click" to add to the group of selected classes, then hit the delete key. VW will ask if you want to reassign objects to another class. When selecting classes, don't select the "grouping" class name prefixes - if you do that, "delete" is grayed out as an option. Only select the final suffix of the class names.