IFC export: Shift in height of structural framing cut by void

[Jelle_debo]

Hello

When I try to export my model to IFC some structural framing elements who are cut by a void change in height in the IFC-model.

I've added some pictures to clarify.

Revit: 

IFC-model:

 

 

Can anyone explain this phenomenon and give a solution?

Thx!

[azad.Nanva]

share part of your project that have the problem!

check this topic too:

https://forums.autodesk.com/t5/revit-architecture-forum/revit-2025-to-ifc-some-element-moving-away-f...

[TripleM-Dev.net]

The void, it is in the family?

As far as i've seen this happen is because constraints in the family is constrained to geometry and not to reference planes. If you open the family any constraints warnings?