Exporting to DGN

1. Click ExportCAD Formats(DGN).
2. In the DGN Export dialog, if the desired setup is not listed under Select Export Setup, select a different one from the drop-down list. To modify the selected setup or create a new one, click (Modify Export Setup); otherwise, skip to step 5.
   The left panel of the Modify DGN Export Setup dialog lists all existing export setups. Settings for the currently selected setup display on the tabs. Use the following controls to manage setups:

   	New Export Setup. Uses default settings.
   	Duplicate Export Setup. Creates new setup using settings from the currently selected setup.
   	Rename Export Setup. Prompts you to specify new name for currently selected setup.
   	Delete Export Setup. Deletes the selected setups (except for the default <in session export setup> which cannot be deleted).

3. In the Modify DGN Export Setup dialog, specify export options on the following tabs as needed, and then click OK.
   • Levels (See Level Mapping for DGN Export)
   • Lines (See Line Styles for DGN Export)
   • Line Weights (See Line Weights for DGN Export)
   • Patterns (See Pattern Mapping for DGN Export)
   • Text & Fonts (See Text Treatment for DGN Export)
   • Colors (See Colors for DGN Export)
   • Seed File (See Seed File for DGN Export)
   • General (See General Options for DGN Export)
   Note: You can also access the Modify DGN Export Setup dialog directly, by clicking Export Options (Export Setups DGN).
4. In the DGN Export dialog, specify which views and sheets are to be exported to the DGN file.

   If you want to export…	Then…
   a single view	for Export, select <Current View/Sheet Only>.
   multiple views and sheets	for Export, select <In session view/sheet set>, and then select the views and sheets to export (see Creating View and Sheet Sets).

5. If you are ready to export, click Next. (Or click Save Set & Close to save the current export settings and close the dialog without exporting.)
6. In the Export CAD Formats dialog, navigate to the target folder for the exported files.
7. For Naming, select an option for the automatically generated file name.
8. If you want views placed on sheets or linked files in the project to be exported to a single file rather than to several files that reference each other, make sure the Export views on sheets and links as DGN references option is cleared. (The default setting for this option is specified on the General tab of the Modify DGN Export Setup dialog referenced in step 3.)
9. Click OK.

Revit LT exports the selected views and sheets to DGN files and places them in the target folder. If the selection set contains elements for which export to DGN is not supported, you are prompted to either export without those elements or cancel the operation.

Note: Geometry always exports to DGN as polymeshes.

The following table maps Revit LT objects and features to their MicroStation counterparts where applicable.

Revit LT to DGN Conversion Table

Revit LT	MicroStation	Notes
Geometric Elements	Geometric Elements	Includes detail lines, model lines, and 2D presentations of Revit elements.
Colors	Colors	Colors are matched as closely as possible. Categories set to export with index color are translated directly to the DGN color index. If true color is used and a direct match of RGB values is available in the DGN color index, the colors are also mapped directly. If a true color match is not available, an RGB value is added to the DGN color index.
Line Patterns	Line Styles	Custom linetypes are unsupported and could produce unexpected results.
Families	Cells	Families are exported as shared cells.
Model Text, Text Notes	Lines, Text, Text Styles	Model text is exported as lines; text notes are exported as text.
Dimensions, Dimension Styles	Dimensions, Dimension Styles	The size, spacing, style, and shape of dimensions may vary slightly. The correct dimension values are always maintained.
Raster Images	Raster Images	BMP, TIF, PNG, and JPG file types are supported.
Links	DGN References	Depending on the export option specified, referenced RVT and DWG files are either converted into DGN files or combined into a single DGN file as cells.
View	DGN Design Model	The view in a Revit project file is converted into a DGN file.
Sheets	DGN Sheet Model	Upon export to V8, sheets are converted into sheet models in the DGN file. Because V7 only supports one model, several DGN files may be exported: one for the model and others for the sheet views in the Revit project file.
AEC Objects		Imported objects from AutoCAD Architecture are not supported.