Not sure. I am trying to get my 2016 online return downloaded into my 2017 return I purchased from Costco this year. Last year I used the online product.

[xmasbaby0 · Accepted solution]

To transfer last year’s return
https://ttlc.intuit.com/questions/1901506-transfer-last-year-s-return-to-2017-turbotax-for-windows

https://ttlc.intuit.com/questions/1899171-can-i-transfer-from-a-pdf-to-turbotax-online