fix IFC export errors

[lukas_v]

The quality of the IFC export needs to be fixed. The problem is with both properties and geometry.
Properties: even if we have the mapping set correctly (via a TXT file), not all properties are in IFC for railings, pipe insulation, etc. Also, the worksets values ​​do not have the correct values ​​in IFC (family workset values ​​are displayed) - for all categories. Why????
Geometry: some elements after exporting to IFC are placed in a completely different place than in Revit. It's completely random and the exporter doesn't even write any export error... Why???
IFC is now a very popular format for submitting data, and even though Revit is a certified software for creating IFC, the quality of the output IFC is usually not high. Also, the method of mapping properties via TXT is very outdated and it is difficult to achieve the required properties from the data standard of the client. It would be good if Autodesk (as a member of buildingSMART) started working with the IDS (XML) format for working with properties and mapping them to IFC in its products.

[Simon_Weel]

Do you use the built-in IFC Exporter or the plugin?

[lukas_v]

@Simon_Weel  Yes, we always use the latest version of the exporter

[aflferraz]

I also have same kind of issues with IFC export, it looks very random.

The same type of floor, some are not exported at all (print 1).

The slanted floor is exported with some wired thickness problems (print 2).

Some walls also won't be exported, simple walls (print 3).

I'm using Revit 2025.3

[lukas_v]

e.g. if there is a circular opening in a wall, the entire wall will appear in a different location in IFC

[aflferraz]

Ok, that's wired, in my case I have circular openings on walls but have no problem (print 5)

I found out that the missing floor issue (print 1) was a zone of the floor that had some odd edges (print 5), once I separated the floors the issue disappeared.

But yes this kind of problems should exist at all.