Check backup and restore utility for FULL Server.
When using backup/restore to restore everything on the server it doesn't work.
For example: I had a problem ith the server and I had to reinstall it.
So I created a backup via backup manager
When I tried to upload it gave error 404 (due to file too big).
Then I had to copy the backup folder directly, ok, so I went to backup manager and tried to restore everything.
The server was configured equally, name, applications, everything including same versions.
The restore reseted all passwords, mysql, email accounts and DNS was not restored correctly.