Do I need to also mail my 1040x if a refund is due? Original return had a payment, which is pending for 4/15, correction has refund. Now what?

TurboTax desktop version issued 1040V for new amount due with amended return, which was e-filed, but I already set up a payment when I filed the initial return. Not sure if I just wait or if I send the payment as the 1040x seems to indicate. Correction in 1040x would issue a refund.