After a sweep some open profils were rotated for any reason so some twists are created
In top view (without surfaces for better view) all profils are similar
If curves have a special colors at start (green) extremities (color point) that will be a "+" for choose them and un rotate :)
(as red square then points are overlapsed)
But your script can also make the trick !
(I have try it: its works very well !)
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