Z-Values is Missing in a Longitudinal Profile

Problem

All Z-values for some of the pipes are missing (see picture below)!

Picture 1: Some of the pipes are missing Z-values

Solution

In the example above, the pipes have "bend" as connection points. In this case you will experience that the Z-values are not shown if the box Draw Bend elevation is unchecked.

Picture 2: Crouch off Draw Bend elevation to show Z-values