This just happened to me, here's what I did: go back to the screen where you can view your documents. For me, I saw two W2's. One showed $0.00 and the other showed my current income. Once you start the filing process, I think TurboTax clears your 2019 W2 and replaces it with your 2020 W2. I located the W2 showing 0.00, looked over to the right and clicked the trash can icon to delete it. Once this was done, I was able to move through the Review step and File. Upon review, my income was correct (not doubled) and my tax return looked correct as well. Hope this helps!
