I started my 2017 return with TurboTax, but had H&R Block complete it. Now this year, TurboTax is pulling in my incomplete 2017 return, how do I fix that?

There is a tricky way to clear out transferred info in the Online version.  But doing this will also clear out all your entries.  Go to Tax Tools > Tools > Transfer from your computer > Continue > then Continue without transferring.

Or you can just start a brand new account with a new username.

Thank you, too bad I already started my return. Back to square one! Thanks for the help.