...after moving one of the additional "Default" model reference attachments, does performing "Save Settings" and entering "newfile" at the uStn> command prompt temporarily display your original "Default" model attachment? FWIW the "Map Manager" "is designed…

While you have your design model open in Bentley Map, go to File > Map Manager in the menu. If you already have Map Manager open, press the "New" button in the upper left corner of it. Then you'll see a dialog box that prompts you to create a…

...unfortunately the capability to programmatically create and define the contents of a "map model" does not exist in the public Bentley Map API at this time. Regards, Jeff Bielefeld [Bentley]