Is there a way to change the elevation of the cut line for an individual stair without changing the cut line for the entire view? The only way I know change the cut line is thru View Properties > View Range > Cut Plane.
The other way is by View tab > Plan views > Plan region. > Draw a sketch, (usually a rectangle around the stairs, indicating the area where the cut plane is going to be different from the rest of the floor plan.) > Plan region properties > View range > raise or lower the height of the cut plane > ok > Finish the sketch.
If you need to go back and adjust the settings, you can always select the edge of the plan region, and edit the view range settings again, until it looks correct. At the end, you may want to hide the edge of the plan region.
I created the plan region. I then changed the cut plane and every option in the dialog box. Changing the different elevations worked on a set of concrete steps, a storefront system and the walls surrounding the stairs, but the stairs themselves never changed! No matter what I did, the cut line for the stairs stayed in place. Am I missing something about these stairs? When I drew the region, I drew it well past the outline of the stairs so I know that the stairs were entirely enclosed within the region.
The stair is never affected no matter what I change.
Yes, the plan region shows a strange behaviour when the stairs are rotated. Very strange. If you make the region big enough, it works, but that's no good, because then the extents of the plan region start affecting other things. There seems to be a bug there.