Thank you all! I understand the reason now. I see a page in the tax form with title: "LONG-TERM TRANSACTIONS FOR WHICH BASIS IS AVAILABLE BUT NOT REPORTED TO THE IRS ". In this form the cost basis has been listed for each of the shares I sold last year.
So: if the cost basis amount listed in this page matches the cost basis in Turbo Tax (upon editing Box E in the screen "Tell us about your CHARLES SCWHAB & CO., INC. 1099-B"), or the cost basis already imported from my tax forms by Turbo Tax is > 0, then I don't have to change anything in Turbo Tax for those stocks, right?
Thanks again.
