It's great that you can import models from another DGN. But, there are numerous times that I've wished I could export a model to the file system via drag-n-drop. The purpose is to support rapid re-compiling or restructuring of DGN file contents when this becomes necessary. Some times, I need to break DGN files apart because the DGN is too complex or it contents don't fit our organizational standards for file structure. While we're at it, the option to either MOVE or COPY during the drag-n-drop procedure would be even better!