Hi Stefan!

Thanks for the tip.
I tried the import from ArtForm, according to your suggestion.
It is interesting to note that there is actually a spline curve here, where 1 point is alternately arranged on the line, the next one as a control point.
The points can be moved, but they do not correspond to the points previously entered when drawing the spline curve.

If I want to make a correction without using the controlpoints, I only have the possibility to create points first, after that you can move the curve to points and in case of a correction I can move the points and create a new curve through points.
The advantage of this would be that the already created snap points of the curve are not changed.

Franz