Dear Ms. G,
I decided to try a 3 room test for a split-level dwelling.
Floor1 = garage, elevation = 0"
Floor2 = living room, elevation = 111"
Floor3 = bedroom, elevation = 147" (over none)
By using quick start, I placed Floor2 over the visible lines of Floor1 and I joined Floor3 to the right wall of Floor2 (I was able to see the visible lines= all floors visible)\
This generated a proper 3D configuration.
I conclude that it is essential to do the quick-start using the floors as templates for subsequent drawing.
Would you agree with this?