Prevent grids from being duplicated on every storey

Why are grids duplicated on every storey? This is not semantically correct, if I ask how many grids a project has or grid axes, I'd get the wrong number, not mention a huge duplication of elements (e.g. project with 20x20 grids x 50 storeys). Is there a way to tell Revit only to export it once? Logically the grids should be assigned to the building.

Start by reproducing an IFC export from Revit with grids across multiple storeys, then inspect how the grids are represented and assigned in the exported building. Done means each grid or grid axis is exported once at the building level rather than duplicated for every storey; the issue names no files or tests to run.

Written by the indexing model from the issue text.