I have a lighting plan that I created with custom MVPARTS of lights, since this plan was done I've gone and Updated the top block to mimick our old 2d symbology but when I insert from pallette the drawing still uses the old definitions and shows the old 2d top block. If in new drawing 2d top view is fine. Is there a way to fix so I don't have to re-insert all my lighting and then readd all the property set definitions already applied in my old layout? Am using Autocad MEP2011.