Downgrading is not possible because this version only supports Confluence 10 whereas earlier versions do not support Confluence 10.
Check Downgrading topic for details.
Renaming to OSLC Connect for Confluence Data Center
To avoid any confusion with Cloud products, OSLC Connect for Confluence now becomes OSLC Connect for Confluence Data Center.
Confluence 10 Support
Support for Confluence 10 has been added. Earlier version of Confluence are no longer supported.
Java 21 as minimum version.
As a requirement for Confluence 10, OSLC Connect for Confluence Data Center now requires Java 21 as minimum version.
New licensing
Licenses are no longer acquired and managed via the Atlassian Marketplace. OSLC Connect for Confluence uses its own licensing management. Existing Atlassian Marketplace licenses remain valid until they expire. For more details, check the Licensing Documentation.
Downgrading is not possible because this version only supports Confluence 10 whereas earlier versions do not support Confluence 10.