The workflow for georeferencing digital models (IFC or Revit) is updated to speed the process and reduce or eliminate the issue of empty geometries. The new workflow works with ArcGIs Pro 2.9 or newer. Refer to https://www.esri.com/arcgis-blog/products/arcgis-pro/aec/geolocating-a-digital-model-revit-or-ifc-in-arcgis-pro/ for a blog post on the new georeferencing workflow.
Learn Lesson -
https://learn.arcgis.com/en/paths/bim-and-gis/