Hi,
I was hoping to use the new IFC writer available in FME 2026.1 to update the IfcPresentationLayer attribute values from IFC to IFC.
The idea was to disregard the current layers exported from Revit from others and define our own layer presentation for the models so we can turn it on and off certain layers in our platform.
I used the reader to load the IFC file (in 2x3 format), and it successfully retrieved all layer attributes into FME. However, I don’t seem to be able to write the updated layers.
In fact, even without adding any transformers—just using the reader and writer from IFC to IFC—the layers are lost.
So I’m wondering if anyone has had success using the latest FME reader and writer for rewrite the layers
Thanks!