How do I draft a wall that is changing in grade around a curve? In the attached image, I am trying to make the wall (in blue) meet the edge of a highway embankment (on the right of the image). I tend to run into this problem often. I tried to delete out the top face (after deleting the extrusion) and weld the edges of the curve using the Weld extension. Then, I tried to bring down the corner of the lines to meet the grade but this did not work. It also did not work before I welded it. It just took a small segment down.
Is there a clean and creative way to do this? It is easy to do this when the wall is straight but not so much when it is curving around a corner from a straight segment.