Viewmodels are now maintained throughout the app lifecycle

Aurora/Design/Components/NavigationMenu/NavigationItem.cs

@@ -17,5 +17,7 @@ namespace Aurora.Design.Components.NavigationMenu
         public string Group { get; set; }
 
         public Type TargetType { get; set; }
+
+        public Type TargetViewModelType { get; set; }
     }
 }