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Can’t go back to edit the form.
You can't edit directly on the forms in TurboTax Online, but you can make changes by going through the Federal interview. Click on Federal from the left side menu and choose Wages & Income, Deductions & Credits, or Other Tax Situations to make changes or add tax forms.
In TurboTax Desktop, you can go through the interview (section menus are listed across the top) or make changes using Forms Mode.
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