The first step after opening a new DGN file is to attach data from other sources as a reference to the Default model.
Civil Data that is ready for sharing is stored in the 6_Civil_Data folder. When attaching references to terrain or geometry container files, always attach the Default model using Live Nesting with a Depth = 1.
When attaching a reference to an OPNP file in the 2_Plan_Sheets folder, you will typically select a drawing-type model and will need to increase the nesting depth to 3 in order to see the published civil data.
Models, Container Files, Live Nesting: Slides | Webinar