Transfer Current Taxes From Online To CD

I started my 2020 taxes online.  I bought a TurboTax Deluxe CD from SamsClub and I want to use it.  I called support and they sent me a link on how to transfer my past taxes that are completed from online to desktop, but it doesn't say how to transfer current/open taxes that are not filed from online to desktop.  Is that even possible to do, or do I have to start over with my taxes all together?