Whatsapp account restoration problems

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Hello,

I have a Xiaomi 9pro with native dual app feature, and I use two whatsapp accounts on it simultaneously, each linked to a sim card.
The problem is that I did both backups on the same gdrive account, and after doing a factory reset and reinstalling whatsapp, I managed to restore only one number, because even if the other backup folder exists, when I try to restore I get the message that gdrive backed up using another number. How to solve? Currently the whatsapp backup folder is not visible in Gdrive, otherwise you just had to copy and transfer the file.

System Configuration: Android / Chrome 95.0.4638.74