Sync brave passkeys between different devices

I want to sync passkeys created on brave into another device. I currently have a macbook where I logged in to certain website using passkey but that passkey I stored it in brave. It was basically a browser passkey. Now I have to renounce ownership of that laptop thus I want to move my data from this macbook to another linux device which I own. I installed brave on it and enabled brave sync but to no avail. It does sync passwords but not passkeys. How do I sync passkeys as because the website does not support multi passkey feature, if I let go of this passkey I can never log in to that website again. Please help.

Version 1.75.180 Chromium: 133.0.6943.126 (Official Build) (arm64)

@bhavyagosai,
On the device that has the Brave installation with the passkey, can you tell or show me (via screenshot) if/where you see the passkey stored in the browser? Does it appear along with your passwords in brave://password-manager/passwords?