After you file

When 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.

 

Attach only those forms and schedules that are new or changed due to your amendment.

If you are using TurboTax you have to do this by visual comparison. The program won't break out those pages for you.
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Mail to the address shown for your location in the most recent Instructions for Form 1040-X.

 

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