Amended return refund applied to next years taxes.

This is not the reply, I don't know how to add to the question.  

My amended 2018 return resulted in an increase of tax $22.  My original refund was applied to my 2019 taxes, so it reduced the amount to be applied next year.  It also told me to enclose and check to the IRS for $22.

This is not correct!  I will now pay the amount due twice - once by check - and then again through my reduced amount applied to next years taxes.

First ignore any voucher that prints out because you do not use it with the amended return. Then file the amended return as is, do not send a payment and the IRS will correct the amount that was applied to 2019 and you will get a letter telling you of the adjustment.