Some titles are restricted in how their saves are backed up. These restricted saves can can only be backed up when the title is deleted and can only be restored once. GBA titles however are not allowed to be backed up at all, the reasons for this are unknown. This is enforced by the [[NS_CFA|ctr_backup_black_list]] file in the NS CFA, which contains a list of blacklisted Unique-IDs:
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Some titles are restricted in how their saves are backed up. These restricted saves can can only be backed up when the title is deleted and can only be restored once. GBA titles however are not allowed to be backed up at all, the reasons for this are unknown. This restriction is triggered if a [[SMDH#Byte.5B1.5D|certain flag]] in the title's icon is set. Or if the SaveID of the title is located in the [[NS_CFA|ctr_backup_black_list]] file in the NS CFA, which is practically a Unique-ID blacklist. The titles blacklisted in the [[NS_CFA|ctr_backup_black_list]], are: