2 more things I can think it might be.
1. In the interior elevation settings look at what you have set for boundary contours (see attched image). This will show a line if you section extent is not touching a wall - set to 'no contours' if you don't want to see a line.
2. Ensure the extents of the elevations are touching the walls in plan. This should then draw a line at the edge of your elevation. If you want to see the wall thickness then stretch the elevation extents to be on the outside of the walls in plan.
Barry.
One of the forum moderators.
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