Creo 7 Piping

I am using Creo Parametric 7.0 7.0.4.0

If a part is created with reference to a red segment(Snap1). Now, I want to select a new segment. When i try to edit the SOlid pipe, I am not able to select a new segment, which was possible in earlier versions. In creo 7 the segments are considered as part of the body due to which it does not allow to replace the existing segment with the new one.

If we try to replicate in Creo 4, it works well