how to delete upload tax return from previous year as wrong file used

[JamesG1]

In TurboTax Online, you may be able to Clear and Start Over.

 Switch Products or Clear and Start Over may be found in the lower left hand corner of the screen if it is available to you.

 See also this TurboTax Help.

 As long as you:

• have not submitted payment, 
• deducted the TurboTax fee from your refund, or 
• registered your product, 

you may erase your return and start from scratch in TurboTax Online. If you have done any of these things, you will need to manually edit your return.