Set BE 2012 to only backup most recent file in directory
I'm running BE 2012. Is there a way to get it to back up only the most recent file in a directory? Our SQL server creates a full backup every day in a directory and the past 3 days worth of backups can be found here. The file name gets appended with the date, so the backups read like so:
I'd like to get BE to only backup the file "backup-09302013" and ignore the other 2. I tried excluding by access date, but it didn't work; it still backs up the entire directory. I know we can probably get the SQL server to backup the current backup in a different directory and rotate them but I'm trying to minimize interference with the SQL processes.
Is this even possible with BE?