Hi redford,
as written in the upate chapter 2.2.1 of the release notes it is not possible to restore a backup from an older version.
But you can save your configuration, so at least all your appdata is still available.
https://www.boschrexroth.com/en/web/xc/myrexroth/share/files/-/document_library/view_document/35367800?doAsGroupId=24096984
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