@Critter-3
We hope your procedure will propagate such a revision to Form 1040-X if an AMEND is in progress.
It should.
You can't use this procedure if you are e-Filing (now closed) because you will be
changing the "payment with extension" line. That's not what the OP said.
@james2c19v
When paper filing 1040-X,
do not include your old 1040 nor your revised 1040 because the Form 1040-X reflects any changes there and becomes your new tax return.
