> But does exist somewhere the old option of "crossing" from opositite
> position of picking point or this function is desapeared?

Hi Pilou, a crossed surface intersects itself, normally you should try to avoid creating surfaces that intersect themselves because they won't work well with other commands later on that involve intersections such as booleans or fillets.

But if you do want to create one, it is still possible - before you pick "Done" to finish the command, move your mouse into the viewport and click on one of the section curves. This will flip it and should create a crossed surface.

This works for both loft and blend - each click on any of the section curves before you exit the command will flip the direction of that section curve.

- Michael