[Kolla] [ Kolla-Ansible] Kolla Ansible Downgrade Issue

Hi Team, I installed Kolla-Ansible release 12.0.0, i.e. wallaby on multinode setup, and then downgraded Kolla-Ansible to release 11.0.0, i.e. Victoria, following the below-mentioned link: https://docs.openstack.org/kolla-ansible/latest/user/operating-kolla.html I downgraded Kolla-Ansible by running the command "*pip install --upgrade kolla-ansible==6.0.0*" and, changing "openstack_release: victoria" in globals.yml. But, "*kolla-ansible upgrade*" failed with the below error (Error also attached in the mail) : "alembic.util.exc.CommandError: Can't locate revision identified by 'wallaby_contract01'" Could you please suggest if the downgrade is supported in Kolla-Ansible? Best Regards, Richa Gupta