See this TurboTax support FAQ for amending a tax return - https://ttlc.intuit.com/turbotax-support/en-us/help-article/tax-return/amend-change-correct-return-a...
Note: An amended past year return can only be filed by mail. It cannot be e-filed. And that will include your NY amended return if you choose to amend NY. You will have to send it by mail.
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