I have made a test route here:
I have decided, I don’t want to drive a circle but an “8” so that the new route would be: Start - 1 - 3 - 2 - 4 - Finish
Point 3 shall be the new point 2. So I drag it after point 1. Before releasing the mouse button, I see the green line between 1 and 2 and that’s where I want to have it - right after point 1.
After I release the mouse button, the old point 3 has become 1 and the old point 1 has become 2:
The expected route would be: