Why does 1040-V ask me to mail my return again?

Turbotax said I filed my federal taxes and that the IRS accepted them


It gave me a 1040-V to mail for the amount owed, as I selected "pay by check"

The 1040-V asks to attach the return again.  This seems redundant and perhaps confusing to the IRS.  Can I mail the 1040-V and a check, and nothing else for payment?   Do I need to attach the return again?   I might just pay the IRS directly online if I can afford it because the check stuff is confusing.

 

Any thought?  Thanks 🙂