Can't shutdown and restart an immutable zone in r/w and single-user in one shot?

I know there's:

# zoneadm -z immutable-z1 reboot -w -- -s

But it seems we don't have an equivalent for shutdown.

That would force me to use two-steps:

# zoneadm -z immutable-z1 shutdown

# zoneadm -z immutable-z1 boot -w -s

Is that really so or am I missing something?

I'm asking because I think that executing the shutdown scripts is the proper way to shutdown a zone even if it's an immutable zone.

Thanks in advance.