After entering a long term, summarized entry from a broker's 1099-B, where the cost basis was noted to have been reported to the IRS and Box D checked, TT incorrectly entered it onto form Schedule D, part II, on line 10 (with box F checked.) This is wrong. It should have been entered on line 8a (box D checked). There was nothing I could do within step-by-step to make entered data to appear on line 8a. This appears to be a bug. I had to manually enter the data on schedule D directly. The second view below (Schedule D) shows the result of manually doing this. (being a non-accountant, I hope this was the correct way to do this)
CORRECTED SCHEDULE D: