Click the MindManager Button 
, click Import, then click Import MPX File.
In the dialog, select the MPX file to import.
Make your selections in the MPX Import Settings dialog.
You can import a selected MPX 4.0 file into either the current map (under the selected topic) or to create a new map, if no map is open.
If you are importing task dependencies as Relationships, you may also want to set the standard visual format of Relationships in the current document ( modify their style). You may prefer to set the relationship format to a light color and thin lines if you expect a significant number of task dependencies in the incoming map. You can also do this after import.
Click the MindManager Button , click Import, then click Import MPX File.
In the dialog, select the MPX file to import.
Make your selections in the MPX Import Settings dialog.
Note that if it is a large file, it may take a while to import.
