Enabling these backwards-incompatible features can :ref:`complicate the downgrade process <3.4-downgrade-features-prereq>`. For details, see :ref:`3.4-downgrade-features-prereq`.
It is recommended that after upgrading, you allow your deployment to run without enabling these features for a burn-in period to ensure the likelihood of downgrade is minimal. When you are confident that the likelihood of downgrade is minimal, enable these features.