I've tried using IE-groups that recognize the zone (IE inherits the zone number) and it works great until I change the zone name/number. The IE group marker changes accordingly but not the name of the IE group in project map which I think is crap/bug.
However the number changes when I close ArchiCAD and then open it up again....wuuuut? I have a faint memory flash from this...
AC 24 SWE Full
HPZbook 32GB i7 7820HQ 2,9 GHz
Quadro M2200 2GB