Piping > Routing > Modifying in Routing > To Redefine the References of a Routing Operation
  
To Redefine the References of a Routing Operation
1. Select the routing feature in the Model Tree or graphics window, right-click and click from the shortcut menu.
The selected routing feature and all subsequent features temporarily disappear.
2. Reroute the segment using the available options.
3. Close the dialog box. The features reappear referencing the newly created routing feature.