Use the UpdateBuildingSite command to update the building site object that was imported into the drawing.
You use this command if the source architectural model has changed and a new ADSK package file was posted in the shared location. When changes are made to the package file, the out-of-date icon 
displays next to a building site item in the Prospector tree. You can update the building site object references without reimporting the object into the drawing.
To update a building site definition
- In Toolspace, on the Prospector tab, right-click a Building Site item and select Update Building Site Definition.
- In the Select Autodesk Exchange File dialog box, select the updated ADSK file.
- Click Open.
The definition of the imported building site object is updated and all its references are redefined with new data.