Do the cms upgrades make permanent changes to the db?


#1

When upgrading 10->11, or 11->12, and after running the new version initially with bootstrap=true does the cms make non-revertible changes to the structure/content of the database?

i.e. would this now render the db unusable with a previous version of the cms?


#2

Yes. You cannot use old version with changes made by newer version. So, create backups before doing this.


#3

As others have said, yes, once you upgrade there is no going back.
From personal experience, trying to run an older version of Hippo on a newer database will irrevocably damage the database. (it was an accident, I swear)