I am having an issue when exporting a Revit Architecture model to IFC for use in ArchiCAD.
I have previously had issues where all slab opeings were repositioned/offset in the export, this problem seems to have been fixed with the upgrade from Revit 2012 to Revit 2013.
However, we have found that openings formed in roofs are still being repositioned. This seems to occur whether the opening is formed using the edit footprint command, the vertical opening tool or the shaft tool.
Does anyone know a fix?
Thanks