I have never seen this, although my exposure to later IC6
features is nowhere near what I absorbed from IC5. On an
open source layout tool I favor, though, there are settings
which will let you work at only the present level, or select
and modify features all the way down to the bottom, as you
like (just a checkbox). Or, let you grab stuff that lies below
(which tends to have unnoticed / unintended consequences):
I would have posted a direct link to a thread on the klayout
'board but evidently I'm still a toddler. Nice. You can go there
(guess I can't tell you where, either, but hope you can deal)
and search for this:
"One object selected, all of the type deleted"
I couldn't rule out that the $$$,$$$/seat tool offers the
same, even if I don't know what they might call it or how
to get at it. But in klayout it's referred to as "shallow select"
in the Editor Options; meaning that it only looks at present
level of hierarchy. Maybe this is a searchable phrase in
Cadence (or will lead you to one). Might also suggest the
Cadence user groups, if you have plenty of time to wait.