I have an old backup of whatsapp message with crypto 12 algorithm.
That backup was belong to phone number 1. After rooted that phone, I installed whatsapp but started fresh without restore from that backup,and also changed my number.
I have another phone(number 2) that now has my old number but with different whatsapp account (also started from fresh).
Now I want to restore my old backup but in both phones even after moving to the old number whatsapp fail to restore from the backup.
How can I restore from the old backup?

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