Door opening missing in the IFC generated from Revit 2021

[luisPDAN6]

A few door openings are missing on our IFCs even though they show correctly in the Revit model. My door family has just 1 door opening profile. I am attaching a reference project in Revit 2021 and the resulting IFC so that you can see the problem.

[barthbradley]

The door opening isn't missing on my end when I Export to IFC and Link the Exported IFC back into Revit. 

[ToanDN · Accepted solution]

I opened you IFC and the opening is fine, but the door is at the incorrect plane.  Is that what you mean?

By the way, Export your file to IFC from Revit 2022 gives the correct model, matching the original.  I blame the Revit 2021 IFC exporter.

[luisPDAN6 · Accepted solution]

The error is related with the Autodesk IFC plugin for Revit 2021. Once the plugin is removed the IFC exports correctly.

I have notified in the app store this wrong behavior, so I hope the plugin gets corrected soon.

[JulienMonribot]

I had the same error and solved it with the new version of the IFC for Revit 2021 available her : 

Release 21.4.1.0 For Revit 2021 · Autodesk/revit-ifc · GitHub