How do I upgrade so that I can import last years return?

[DoninGA]

There is no need to upgrade to download a PDF of a prior year online tax return.

To access your current or prior year online tax returns sign onto the TurboTax website with the User ID you used to create the account - https://myturbotax.intuit.com/

Scroll down to the bottom of the screen and on the section Your tax returns & documents click on Show.  Click on the Year and Click on Download/print return (PDF)

If you used the desktop CD/Download editions installed on your computer, the only copy of your tax data file and any PDF's will be on the computer where the return was created.  TurboTax does not store online any returns completed using the desktop editions.

Or go to this IRS website for free federal tax return transcripts - https://www.irs.gov/individuals/get-transcript

For a fee of $50 you can get a complete federal tax return from the IRS by completing Form 4506 - http://www.irs.gov/pub/irs-pdf/f4506.pdf

[DoninGA]

If you were referring to transferring the 2019 tax data to the current year 2020 online tax return, you only need to sign onto the 2020 account using the exact same User ID you used to create the 2019 online account.