Are you using the Online version or the Desktop program? What did you use last year? You really should use the Turbo Tax data file ending in .tax2019 to transfer or for online be logged into the same account. If you are transferring from online to Desktop I can tell you a couple different ways to do it.
How to transfer into the Online version
https://ttlc.intuit.com/community/entering-importing/help/how-do-i-transfer-last-year-s-return-into-...
How to transfer into Windows Desktop
https://ttlc.intuit.com/community/entering-importing/help/transfer-last-year-s-return-to-turbotax-fo...
How to transfer into Mac Desktop
https://ttlc.intuit.com/community/tax-data-file/help/how-do-i-transfer-last-year-s-return-into-the-t...
