<< After you have moved those to the back and finished the loft command you can delete your original curves, extract the Loft's edges using Ctrl+C/Ctrl+V and use those extracted curves for the Network

Works absolutly not for me!

I copy well the "edges" of the Loft change Points (Ellipse + Circle) and not the "closed curves" !
+ the original rounded sides
Make the Network : seam comes back in Front and not on left as during the moving point Loft!