EA never said or implied that the fixing of the xfer system was to stop dupers. This is an urban legend that sprang to life on it's own.
EA took down the xfer system. the fixed something. it's now back up.
IF it happens to have fixed any duping issue, there is no reason NOT to bring it back up, as then the duping problem has been fixed. don't understand why you'd be upset that xfer system is back up during a 'duping episode' as it were heh.