Hello everyone.
I have a some problems with export to IFC.
First of all, my task is to make a nwc file with rooms and zones. For this I had make a ifc file with such options:
where I did chose only this three:

and this one settings:





After this steps a had i result:
In Navisworks 2017:

and in Navisworks 2019:

What I do wrong? Why a can't make a file like this?
