BlenderBIM python flow of adding an removing an IFC element to an existing IFC

Let's say I have an existing IFC loaded in BlenderBIM add-on. I would like to add a simple cube mesh and assign that mesh an ifc class. Next time I run the script I would like for the IFC element to be removed and be replaced with the updated IFC element.

What would be best practice? Assign that IFC element a specific property so it could be found again? Then if the IFC is modifed with python. How do I make sure the latest IFC is loaded into the BlenderBIM add-on?

Ace
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