If you do not assign IFC data to objects, they will not export to IFC.…
cadmovie814 – IFC in Detail – Part 5
Creating Special IFC Objects. When you import your IFC project into your model viewer, you will only see the IFC objects.
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The reason for this is that Vectorworks will only export IFC objects. So if you have created your own furniture or your own sanitary fixtures they will not be exported.
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