You can edit:
Note: If your changes result in a geometric impossibility, or cause problems in subsequent features, you will be warned by the Conflict Solver.
Editing the Pipe by the Feature Guide
Right-click on the Pipe name in the Feature Tree and then right-click. In the popup menu that appears, select Edit Feature.
The Feature Guide will appear, automatically open to Required Step 1. You now return to the same situation in which you created the Pipe.
Make the required modifications. Press OK or Apply in the Feature Guide to complete the function.
Editing the Pipe Sketch / Composite Curve
In the Feature Tree, right-click the curve or sketch listed under the Pipe feature. In the popup submenu, select Edit Feature. Or you can right-click on the Pipe feature or its name and select Edit Sketch / Composite.
You will enter the function by which the curve or sketch was created. When you are finished, upon exiting the function the Pipe feature will be updated.