More staircase headaches!

[Gene Davis]

Thanks, Bill. Can I presume that the invisible rooms were done using invisible walls? That, I can do. I am using invisible walls to do the big 12" lowered platform.

I can drop the 12" where I need to, because enough of the zero level lies across the first tread of the UP stairs to make them stay as-is. I can do a little room box with I-walls so that the stairs down begin at -6. I can modify the framing that generates. All do-able by me.

But changing the stairs to a symbol? Wow! That is beyond me. My symbol wizard wants to import a 3D file made elsewhere, and I don't see anything in the dbx when I open the stairs that leads to turning the stairs into a symbol.

Hint?