[ceph-users] Nautilus to Octopus when RGW already on Octopus

We are finally going to upgrade our Ceph from Nautilus to Octopus, before looking at moving onward. We are still on Ubuntu 18.04, so once on Octopus, we will then upgrade the OS to 20.04, ready for the next upgrade. Unfortunately, we have already upgraded our rados gateways to Ubuntu 20.04, last Sept, which had the side effect of upgrading the RGWs to Octopus. So I'm looking to downgrade the rados gateways, back to Nautilus, just to be safe. We can then do the upgrade in the right order. I have no idea if the newer Octopus rados gateways will have altered any metadata, that would affect a downgrade back to Nautilus. Any advise.