Hi Ivan, saw that was your note. I totally misunderstood that, I'm sorry. As I appreciate a KISS approach I tried to simplify the map and was't aware of 3d mapping, even for stairs (and sorry but I think that is too much detail...)
I reverted my changes with JSOM. Let me know if it's okay. 

Side note: since I try to resolve notes that I find, in case of doubts can I ask you?

Sorry again and hope that with revert changes everything is now back as intended. 
