Yes, if you have the *.tax2019 data file on your computer, you can transfer it into a 2020 online return.
Did you already start the 2020 online return? If so, here are the steps to transfer the 2019 data file. It will require you to clear the 2020 return as part of the process prior to transferring.
- Sign in to TurboTax Online and continue your 2020 return.
- After the return has loaded, select the Tax Tools drop-down menu in the left column menu and then select Tools.
- In the Tools pop-up window, select the link Transfer last year's TurboTax return from your computer and follow the prompts.