The Update Selective Coordination Graph command is used to update a selective coordination graph to reflect any changes to your design. Graphs are not automatically updated when changes are made. You must manually update them.
To update a selective coordination graph, go to
Ribbon: DM Electrical->Distribution Equipment-> 
Update Selective Coordination Graph
Pulldown Menu: DM Electrical->Distribution Equipment Schedules->Update Selective Coordination Graph
You will be prompted to specify a graph to update.
Select graph to update:
The graph will be updated to reflect the latest information.