Amending my 2020 Tax Return, but TurboTax is Giving a Federal Refund Before I Amend Anything

New to the forum, and desperate for help. My 2020 Federal and NYS Returns were accepted. Now I just received a new K-1 (Form 1065) which add $823 of income. So when I open my TurboTax (Home & Business) file and select "Amend", it starts out with approx a $536 refund, before I change a thing.

 

I continued with the amending anyway, but even at the final stage, when I preview my 1040X, I'm getting a refund. The 1040X Form seems to show a reduction in my Adjusted Gross Income.

 

Does anyone know what is going on?