Hello fvnetu,
I haven’t heard about the problem. Reversing the path direction in AI is easy:
(A) The path has the normal direction, which can be seen for example with the text on the path.
(B) The copy of the path was marked…
(C) Object > Path > Reverse Path Direction reversed.
See picture.
In the internet I found a long conservation to your topic with another program. I don’t know if it’ll help you. See under https://typedrawers.com/discussion/3360/new-prosper-issue-winding-directions
Good luck, J.