Sorry No. The Desktop CD/Download program does not apply to the online version. They are 2 separate things and do not sync, share or talk to each other. Do you need to transfer a 2017 Online return into the Desktop program? I can tell you how. Or why are you asking?
Oh, it does give you access to the online Quick Employer Forms if you need to prepare W2s or 1099Misc. Or you can prepare them on your computer.
yes I do need to transfer over data. so by buying this version of turbo tax how does it help if I can file it on line?
Yes you can still efile Online. The Desktop program is much better. It can do unlimited return and efile 5 for free. You get one free state program download to prepare unlimited state returns. You can see the actual forms and enter directly on them. And other features and advantages over the online version.
TRANSFER
Transfer from Online into the Windows Desktop program. Expand the 3rd blue link
https://ttlc.intuit.com/questions/1901506-transfer-last-year-s-return-into-turbotax-for-windows
One way is to start a 2018 Online return and transfer into that. Then you can download the .tax2018 file from online and just OPEN it in the Desktop program.