TurboTax does allow transfer of the previous year's information from the CD/Download TurboTax software to TurboTax Online, and vice versa. Instructions are in the following FAQs.
https://ttlc.intuit.com/questions/1900883-how-do-i-transfer-last-year-s-return-into-turbotax-online https://ttlc.intuit.com/questions/1901506-transfer-last-year-s-return-to-2018-turbotax-for-windows https://ttlc.intuit.com/questions/1901265-how-do-i-transfer-last-year-s-return-into-the-2018-turbota...
