hi,
yes, and "that way" of selection must be in some sort saved in the database.
I can imagine that its "very hidden" in the code - but it must be there.
If it would be accessable with an ID or an GUID - like you mentioned - it open A LOT of new ways to manage objects in a hierarchical way. A little bit like nested GDL objects.
AC24 4018 INT, Win10, Quadro P2000, Xeon, BIMCloud