Nope. Online and Desktop are different and separate. You should have noticed a lot of differences when you did 2019 online. By the way, if you want to go back to the Desktop program next year then download the 2019 data file to your computer ASAP so you can transfer it into 2020.
If you used the Online version you should always save both the PDF file and the tax data file each year (before online closes Oct. 15) so you have a copy when you need it or if you ever need to amend it in the future. You shouldn't rely on getting a copy from Turbo Tax. Or if you want to use the Desktop program next year so you can transfer from this year.
Save the PDF
https://ttlc.intuit.com/community/saving/help/how-do-i-save-my-turbotax-online-return-as-a-pdf/00/26...
Save the tax file
https://ttlc.intuit.com/community/saving/help/how-do-i-save-my-turbotax-online-return-as-a-tax-data-...
