We have customers that want to retain certain files on a backup for a
different amount of time than others.  This would be only for one particular
backup version of certain files.  They should have done an archive, but this
is after the fact.

After a backup is made, is there a way to change the management class for some
files which are active on a backup to a different retention period than
others?  This would be a one time change for that particular backup.