Only receiving partial Brave Rewards

I received a reply from steeven and he referred to this thread for fix https://community.brave.com/t/fix-for-bat-not-porting-to-uphold-wallet/222108.

I’m stuck at the part that instructs you to disconnect and reconnect your Uphold wallet.

When I go to uphold.com, I cannot find the option to disconnect from Uphold wallet. The only option I can find is disconnecting from Brave Rewards. Is that the same thing? Do I need to backup my BAT before disconnecting?