Yes, you can transfer-in the prior year's data that was prepared in Online TurboTax. You can download your prior-year *.taxYYYY data file from your online account and transfer it into a new desktop return (CD/download) in your purchased software.
So if you purchase desktop 2018 TurboTax, and if you used online 2017 TurboTax, you can download the *.tax2017 data file to transfer.
NOTE: You will need the *.taxYYYY data file, not the PDF.
