There are SYNCHRO plugins available that can export a SYNCHRO project format (SPX) from within Bentley MicroStation CONNECT(i-Model and DGN), Autodesk Revit (RVT), and Autodesk Navisworks (NWD and NWF).

Note: To import models from other Bentley products, you can export an i.DGN, import in MicroStation, then use the plugin.

1. Run and install the .exe (double-click on the setup file and follow the on-screen instructions).
2. Once the Plugin has been installed, open dgn or .idgn in MicroStation CONNECT Edition.
3. Go to Files > Settings > Configuration > Configuration Variables.
   
   
   
4. Find MS_DGNAPPS variable, press Edit.
5. In Edit Configuration Variable, Append SynchroPlugin.dll value and press
6. Select Utilities > MDL Applications.
   
   
   
7. In the MDL Applications dialog, highlight SYN_PLUGIN within Available Applications, then choose Load.
8. Highlight SYN_PLUGIN within Loaded Applications, then choose Key-ins.
   
   
   
9. In the SYN_PLUGIN: Key-in dialog, click Open to adjust settings.
   

12. You will be presented with the SYNCHRO Plugin window. There are several export options available: Coordinate System - Can be used to export in World coordinate system or in local Global Origin coordinates The Global Origin can be queried by typing “go=” command in MicroStation.
    
    Note: MicroStation exports files in local Global Origin coordinate system (export to FBX, JT, etc.), but when you x-ref the file into another DGN, it appears in Global World coordinate system.
    
    Element Properties - Can be used to skip the export of Engineering Component properties as SYNCHRO User Fields.
    Element Classes - Can be used to export of Engineering Component classes as SYNCHRO 3D Sets.
    Hidden Elements - Can be used to export hidden elements.
    Level Display - Can be used to skip levels that are not added to Level Display in selected 3D view.
    Break By Levels - When enabled, 3D elements are grouped by levels.
    Break Cells - When enabled, creates separate node for each 3D element under leaf cell.
    Limit 3D Object Tree Depth - Enable to limit the maximum depth of 3d object tree.
    Limit 3D Object Tree Levels By - This option determines the maximum depth of 3d object tree.
    Construction Elements - Can be used to skip the export of construction elements.
    Dimension Elements - Can be used to skip the export of dimension elements.
    Named Groups - Can be used to export Named Groups as SYNCHRO 3D Sets.
    Tags - Can be used to export Tags as SYNCHRO User Fields.
    Text Elements - Can be used to skip the export of text objects.
    Wireframe Elements - Can be used to skip the export of polylines, lines, circular arcs, circular arcs, circles, elliptical arcs, ellipses, nurbs curves objects.
    Optimize 3D Model - Enable optimization of 3D model on export.
    Optimize Geometry - Enable optimization of geometric objects.
    Optimize Identical Geometry - Enable optimization of identical 3D objects.
    Build Resources - Create resources by 3D entity tree on export.
    Tessellation Accuracy - Tessellation accuracy ( 0 - 100 ).
    
    
13. Choose the settings that you prefer and click Export SPX.
    

14. The progress bar will appear to give you the status of the export.
     

16. When the export is complete, you will receive a message indicating the export finished successfully. Select OK.