Flip with guide curve fails

Hi Kim,

It’s nice of you to propose a solution.
The issue is that it only works in this particular case, where my curves are kind of daisy-chained.

I did, I guess, a more bullet-proof version :

But the real issue is : what are the requirements for the guide curve to work as expected with the “Flip” component.
When possible, I like to use “high-level” tools rather than tedious workarounds.