David,
As I know, windows in the AC19 INT library has this functionality too. Can you tell me which version did you try?
gs_list_location has nothing to do with the zones – it is just a parameter for listing, users can write anything to that parameter. You can read more about linking zones and openings here: https://gdl.graphisoft.com/tips-and-tricks/linking-openings-to-zone/
Gergely Fehér
Team Leader, Library Team
GRAPHISOFT SE