Rudder

Since we migrated the XML format in #24876 for isSystem to the policyTypes tag in 8.2, when we start Rudder in 8.2 the old format gets migrated, for example in a file in the configuration repository directives/systemSettings/test_tech/activeTechniqueSettings.xml :

-  <isSystem>false</isSystem>
+  <policyTypes>{&quot;types&quot;:[{&quot;value&quot;:&quot;rudder.base&quot;}]}</policyTypes>

But when using Rudder in 8.1, the rollback action (after or before) causes an issue that seems to indicate that the new format is not compatible and makes it impossible to do the action :

Ideally the new format should be supported also in 8.1. There may also be some archiving features that will break in a local dev environment which goes from 8.2 to 8.1 often, but they are still to be identified.