Synchronizing the DGN file to iTwin for design review requires a Bridge/Connector that can convert the DGN file to a BIM file (model with business properties embedded) and push the BIM file to iTwin.
Currently we only have Bridge for OpenBuildings Designer, Civil and MicroStation.
If you want to sync a DGN file, ensuring that all the business properties related to raceways and equipment are included in the iTwin, you should follow the procedure in this article.
We are configuring Bentley Raceway and cable Management to use the MicroStation bridge and sync to iTwin.
If above problem still persists, then please create a Service Request and contact the Bentley Product Advantage group. Please include a list of all relevant details to get in depth analysis for a solution or workaround.
Bentley's Product Advantage Group requests that you please confine any comments you have on this Wiki entry to this Comments or Corrections?" section. THANK YOU!