This tutorial will describe the steps needed to clip a reprojected image including Bing Maps.

By default reprojected images (including Bing Maps) cannot be clipped.  The following workaround is recommended.  In this example, the DGN is EPSG:26717 and the Image is EPSG:900913.

- Reproject the DGN to the CGS of the attached image.  For Bing Maps, use EPSG:900913.  The result of this step is that the image is attached without being reprojected and the DGN data is now reprojected to match the image.  NOTE:  To successfully reproject the DGN data, you may need to adjust the Reprojection Settings of the Active Model.  This dialog is found in the Geographic Coordinate System icon bar.

- Fit the view and clip the image as needed.  NOTE:  The DGN elements may not fit nicely to the view.  In that case, simply use Window Area to locate the data to the view.

- Once the image has been clipped, reproject the DGN data back to it's original GCS.  In this example, that is EPSG:26717.

- Fit the view as needed.

The following video describes this workflow.

Note that this workflow does not require Descartes.

Note:  Always have a backup of your DGN before reprojecting your data.