As per this article ( Can I make a group views on modern dashboards as like as the classic on that have a expand tree? ) that was asked at SWUG 2023 and again at SWUG 2924 by myself apparently there is a way to create them but didnt manage to catch Sascha before leaving to find how.
I know of the drill down widget way but I couldnt replicate the nesting and no import which means the whole structure of buildings, node room, the dynamic query inside them that pulls the groups together and the maps attached has all got to be done by hand again, new platform but no importer.
