When you use the CD/Download software your tax return is on the computer which you used to prepare your return. TurboTax does not have copies of returns filed with the CD/Download version.
If you don't have a .tax file of your prior year return, you cannot transfer information, you can just manually enter the information if the program asks for prior year information.
The following website has information on how to get prior year tax information.
https://www.irs.gov/newsroom/heres-how-to-get-prior-year-tax-information
