I have the following problem:
I have this CAD-image

I want to move the selected polyline. But i only want to move the part which is located between point 2 and point 3 like shown in this picture

But your control moves all points of the polyline (like this)

How can i solve this problem? i've been trying for 2 Days without an solution. Can you pease help me?
Greetings Peter Kuhn