If you are using the desktop version of TurboTax, you have 2 choices:
You can open a new 2017 return and then transfer over your data from the amended 2016 return and re-enter the 2017 information; OR
Stay in your original 2017 return and manually update whatever may have changed from the 2016 return (e.g. carryovers, state tax refund, etc.).
It is not possible to import information from 2016 into an existing 2017 return. It may be easier to just update your 2017 return manually.
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