The Remove Conduit or Cable Tray Node command is used to convert two conduit or cable tray centerlines into a single centerline. The two centerlines you select must be connected. The new centerline that is created will run from the starting point of the first centerline to the ending point of the second centerline. This command cannot be used on intersections with more than two centerlines.
To remove a conduit or cable tray node, go to
Ribbon: DM Electrical->3D-BIM-> 
Remove Conduit or Cable Tray Node
Pulldown Menu: DM Electrical->3D-BIM->Remove Conduit or Cable Tray Node
You will be prompted to specify a point on the conduit or cable tray near the node to be removed.
Select conduit or cable tray near node to remove:
The two centerlines will be removed and replaced with a single centerline.