2018 to 2018? OR do you mean transfer a 2017 HRB return to 2018 Turbo Tax? You can't do anything with a 2018 HR Block file except to maybe transfer it into 2019 NEXT YEAR.
To Transfer from 2017 into 2018 Online Turbo Tax see....If you used other software
https://ttlc.intuit.com/community/entering-importing/help/how-do-i-transfer-last-year-s-return-into-...
To Transfer into Windows Desktop program, https://ttlc.intuit.com/community/entering-importing/help/transfer-last-year-s-return-to-turbotax-fo...
To Transfer into the MAC Desktop program, https://ttlc.intuit.com/community/tax-data-file/help/how-do-i-transfer-last-year-s-return-into-the-t...
