In Copy Backup, all selected files and folders are backed up. Copy Backup neither uses nor clears the archive
attribute. Copy backups are not used for typical or scheduled backups. Instead, copy
backups are useful to move data between systems or to create an archival copy of data
at a point in time without disrupting standard backup procedures.
All selected files and folders that have changed during the day are backed up based on
the files’ modify date. The archive attribute is neither used nor cleared. If you want to
back up all files and folders that change during the day without affecting a backup
schedule, use a daily backup.