Exporting to Ifc

[ymakJ492S]

Hello,

I open an Ifc file in Revit and export it twice as Ifc.

My issue is that for certain elements, e.g. IfcDoors, the element IfcGlobalId I get differs in each exported Ifc file.

Shouldn't it be the same and equal to the IfcGuid I see in Revit?

[barthbradley]

Explanation here: 

https://wiki.osarch.org/index.php?title=Revit_setup_for_OpenBIM#:~:text=The%20only%20way%20to%20see%....

[ymakJ492S]

I have tried it and it hasn't worked.

When I open the Ifc in Revit I can see in the IfcGUID the value that exists in the original Ifc file.

I export it as you suggested and I cannot find in the exported Ifc file the IfcGUID value that exists in the Revit file.

Any explanation?

[RDAOU · Accepted solution]

@ymakJ492S 

IfcGUID should not change..See below GIF and the settings used in the standard OOTB exporter

• use Link and Export instead of Open and Export
• Export Links as separate IFC
• make sure the option to store ifcGUID to a parameter is checked 

[ymakJ492S]

Thank you.