I have used this procedure to successfully migrate an installation of BUE 2015 ver. 14.2 to a new server, with a different machine name. If you are moving things from the old machine to the new machine and they both have the same names, see my post here and use that instead. I used this procedure…
Migrate Symantec Backup Exec 2015 14.2 to new server with a DIFFERENT name
Read article