Long names doesn't update from Zone Stamps

[Xan]

Hi all

I'm trying to export a project though IFC.

My problem is that the "long name" string doesn't update when I change my zone stamps. They are using old names form a previous saved version of the project!

How do I update the "long name" string in IFC to show the new zone stamp names? Sync to plan does nothing.

I'm on AC12, using the IFC zone stamp.

All help is highly appreciated, if this doesn't work out I have to manually fix all 300+ zones

Kind regards Bram Andersen