Brave Sync with multiple devices ... favorites multiplied by 4

Hello,

I try to use Brave Sync with multiple devices (pro and personnal computers) and the result is that my favorites are constantly multiplied by 3 or 4 and I constantly have to make clean. Each time I add a new devices on my Sync account, I have to do that again.

How do the sync runs and is there a place where I could define my favorites for all my devices to avoid to constantly tidy up my bookmarks on all my devices.

Thanks !
Seth