How do i restore a backup file that has a different blackberryID attached to it?

i wanted to change my bbid associated with my phone (Z10), so I did a backup, wiped my device, setup new bbid then tried to restore with backup file. Because the bbid on my Z10 now is different from the bbid on my phone when i made the backup file. BBlink won't allow me to restore my Z10 with this backup file. Please help.
I understand there is a way for me to change the bbid attached to my backup file?

You can't change the BBID associated with the backup.

If they don't match, it won't work. No workaround.