This repository creates a Revit add-in that can upgrade Revit files to a newer version. There is a project file for Revit 2017, 2018, 2019, 2020, 2021, 2022, 2023 ...
In my case the Project Base Point in Revit 2022 contains an elevation of -1000mm. In earlier Revit versions, this elevation was placed in the elevation parameter of the IFCSite. In the latest versions ...