You can't directly transfer.  The files have to be converted... IF that's possible.  I'll see if I can tag someone to answer if it can be done.

@Ashley at Intuit (aka Henry Jr)  -  CAN this be done?
edit...LOL....you're already here

LOL, i'm psychic or psychedelic depending on how you look at it. :stuck_out_tongue_winking_eye:

Geez, after seeing yours and Tracy's fancy titles I thought it was time to update mine.  I hate to feel left out.

@campbellsidneyi be aware that there is no backsies! https://proconnect.intuit.com/proseries/data-conversion/  Data entry is entirely different, try PTO before you totally commit You can log in and test with your current user name & password. https://ito.intuit.com/login/#/signin
At least Ashley isn't psycho

Conversion will be open next week to convert your 2017 ProSeries returns to 2018 ProConnect Tax Online returns. You will follow the steps within this article once it is live:  https://proconnect.intuit.com/tax-online/conversion/

Data conversion tool only works with Microsoft Windows system? Is there a workaround for MAC?

@Taxes4life Since PTO is cloud based, once you convert your 2017 PS, it can be accessed from any browser. Do you have PS2017 on a MAC?