Again ... importing accuracy is not guaranteed ... the user must always review the information. At the very least the totals of the sections on a 1099-B (long/short term & covered/non covered) if not all the individual entries should have been reviewed. If you had done at least that you may have caught the error prior to filing.
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...
