Can you provide the dgnlib to test?
For more information about the Road and Site design tools, visit the Road and Site design WIKI at: http://communities.bentley.com/products/road___site_design/w/road_and_site_design__wiki
The first time you open the file, you can edit it, save the modification and exit ORD. If you open the file again, you will be prompted for an error.
TestAddworkflow.dgnlib