When I click on the "Clone and Remove Pro Assets" option it will create a clone of the map but will not remove any pro assets. It will put me into edit mode for the map and will allow me to make my own edits to the map but will not let me save the map at all. If I leave edit mode for the map it will not allow me to reenter edit mode due to the map containing pro assets. I am still able to edit and save my non-pro maps.