Revit 13/14 Easter Egg

I never ran into the situation I'm in now with Revit 2013 that I'm in now with 2014 where a project was started in CAD (ACA version) then brought into Revit after SD or Programming Phase, but I checked & 2013 can. So pre-revit 2013 AEC content from ACA (aka:ADT) wouldn't show up in Revit so one would have to use the function to "Export to CAD". Of course, it doesn't translate the 3D info, it only shows the 2D info.