Yup, I admit I am lazy, just don't want it to happen at all.
I do a lot plan and section tracing. They represent various interconnected concrete channels, tanks, flumes, wells, and the like. Not like a building where you have fixed floor heights, but a lot of intermediate elevations, with "zig-zagging", sloping channels. Tracing is far better faster than redrawing from a dimensioned plan or section (if you don't have to do a lot of cleanup) and is less prone to operator (me) error. :0