1. Create a new 3D dgn file in MicroStation-based product.
2. Define GCS (Geographic Coordinate System) already known (Utilities-> Geographic -> Coordinate System)
3. Select GCS only from Projected (northing, easting…) Library
4. Attach local Reality Mesh to Dgn file. (Attach> Reality Mesh>Attach mesh)
Limitation: local 3MX attachment uploaded to ContextShare is not supported using the Hosted ProjectWise Automation Service workflow. We recommend using iTwin Synchronizer to process 3MX data to iModel.