Downgrade from SQ-8.1 Developer Edition to SQ-7.9.2 Community on Docker


We are running SonarQube on a docker instance with a separate postgresql DB.

We want to run a new docker instance of developer-beta image in order start a trial but poiting to the current DB.
In case of downgrade, we want to make sure that we can turn to LTS (SQ-7.9.2) version again without lose last activity (Avoiding restoring a PG dump). Is it possible? There is some downgrade plan to follow?
Seems that there is no problem to downgrade from Developer to Community but it is not clear if downgrade from 7.9 to 8.1 is supported.

Thank you!

Upgrades are one way! The only way to revert to an older version is to restore the database.