Not sure how you could have filed when the program was not fully operational and if you did TT should have sent you an email alert to amend the return for the change but you can put in an accuracy claim ...
TurboTax guarantees the accuracy of the calculations on the tax return. It cannot and does not guarantee that the tax data entered by the user OR imported to the software is accurate.
You always owe your correct income tax. At most, the accuracy guarantee would cover any penalties and interest due to a program mistake. You must file your claim within 30 days of receiving the IRS notice.
See this TurboTax support FAQ for the Accuracy Guarantee - https://ttlc.intuit.com/community/charges-and-fees/help/what-is-the-turbotax-100-accurate-calculatio...
