My old ios prior to dec 10 has bat that i want to sync to my mac desktop or new ios phone

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Description of the issue:
I have bat in my old phone brave browser which was used up until dec 2020. i got a new ios phone in dec 2020 and now i cant sync my bat from the old phone into my desktop.
How can this issue be reproduced?

1.old ios has bat
2. mac desktop shows no bat synced
3.

Expected result:
want to sync old ios bat to mac desktop
Brave Version( check About Brave):
1.21 (20.11.10.16)
Mobile Device details
ios 14.2 iphone 6s plus
Additional Information: