a few things to consider. First, that IFC is strictly coordination of 3d geometry and data/info attached to that geometry. Any resulting 2d (plan) graphics are inconsistent at best. This is largely due to differences in BIM authoring and ability to read/write IFC in different programs. Which leads to the Second suggestion; all OpenBIM coordination should be done in a package. I always send and request 3 formats in an IFC exchange: DWG for plan graphics, IFC for 3d geometry, PDF for verification and validation of import. Third suggestion; which ever tool was used to export the IFC, verify that it has the ability to assign classifications, and that classifications are correctly assigned. I assume your walls came in as walls, but often times with unclassified elements, AC just imports them all as objects, which are not going to show graphically in floor plan as you would need them to. If exported from Revit, it could be a difference in the way stories are handled. You could request or export individual IFC for each story, then import them using the hotlink module manager. But I would still not count on them coming in as graphically flawless in plan view
BIM solutions and trouble shooting (self proclaimed) expert. Using Archicad 26 5002 US on Mac OS 11.5.2
