According to the tag zextras backup, the following results have been found:
Data migration from Zimbra using Carbonio Backup
The main function of Carbonio Backup is to back up the mailboxes of Carbonio users. The backup created with its help can be used to restore data not only on the original server but also on a new server, ensuring the possibility of system recovery even in the event of physical destruction of the servers, as well as account migration, including when switching from Zimbra to Carbonio. In this guide, we will analyze the process of correctly extracting backup files from the system and restoring them.