I'm trying to migrate a Confluence database (including attachments) to the Atlassian Cloud server.
The 'Confluence Cloud Migration Assistant' does not work as it does not support server version 5.7.1.
I've made a backup of Confluence, but it is not possible to restore the backup in the Cloud server (due to unsupported server version)
So, how how do I migrate from server version 5.7.1 to the Cloud server?
Also I wonder why Atlassian makes it so hard for the customers to backup and restore databases. All server versions seem to have incompatible database format (?).