This section only applies if your one-line diagram is based upon a Revit model imported using Design Master Electrical RT.
The Import from Revit command is used to import information from a Revit project into the current project. This command is used following the Export One-Line command in Revit to ensure the information has successfully been transferred.
To import project information from Revit, go to
Ribbon: DM Electrical->One-Line Diagram-> 
RT: Import from Revit
Pulldown Menu: DM Electrical->One-Line Diagram->RT: Import from Revit
The information will be imported from your Revit project.
You will not need to run this command again after the information has been transferred. The project information is updated automatically each time you use a one-line diagram command.