Go by the actual 1040X. Line 18 should be your original refund amount and line 22 should be your additional refund. If you paid on your original return it will be on line 16. If there is an amount owed with the amendment, it will be on line 20.
Ignore the payment voucher and regular 1040 that prints out with the 1040X. We don't know why that prints. You just include a check when you mail the 1040X. The voucher is for what your original 1040 return would have been if you had done it right including these changes. If there is an amount owed with the amendment, it will be on line 20. You do not send in the new 1040 or 1040SR. Just the 1040X.
