I suggest using DWG files in both ArchiCAD and Microstation. The DWG importer/exporter in ArchiCAD can be set up with templates and I suggest to start with some prepared DWG file (from Microstation, perhaps) that you can use to help setting up the ArchiCAD DWG template.
You can make a full mapping between fonts and layers for exchange with DWG.
ArchiCAD has a DGN reader, but I don't think the importer/exporter is as flexible as with DWG.
--- stefan boeykens --- bim-expert-architect-engineer-musician ---
Archicad28/Revit2024/Rhino8/Solibri/Zoom
MBP2023:14"M2MAX/Sequoia+Win11
Archicad-user since 1998
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