I amended my return on TurboTax and am getting back an extra $250 federal and $49 State (CA). For federal I'm getting the cash back electronically, but TT made me print out a 1040-V payment form/voucher saying I'm paying ~$3k to the IRS. Do I need to send this? Or is this based on my past tax due (which I've already paid and had accepted by IRS)
