To Attach a DGN File as an Underlay

1. On the command line, enter DGNImport.
2. In the Import DGN File dialog box, find and select the DGN file to import, or enter the name of the DGN file at File Name.
3. Click Open.
4. In the Import DGN Settings dialog box, make sure the Import Into Current Drawing check box is selected.

   This option brings the DGN entities, and their associated linestyles, into the current drawing.

   Note: If this check box is cleared, the DGN entities are placed in a new drawing.
5. Under Import Into Current Drawing, specify how to name incoming objects during the import:
   • Prefix Dependent Definitions: Adds the DGN file and model name as a prefix to the incoming object’s name. If the prefixed name results in a new name conflict, then an incremental number is appended to the name.
     Note: This is similar to the Xref Bind behavior.
   • Ignore Duplicate Names: Ignores any duplicate symbol table names in the DGN file, and gives precedence to the host definition for duplicates.
6. Select a design model from the list, and then specify the remaining import options.
7. Click OK.