Thank you for your reply RobertB4444.
I tried deleting and re-entering it manually and the Turbo Tax Form is still checking Box F instead of D. The questions have been correctly answered indicating that LT transactions on Form(s) 1099-B showing basis was reported to the IRS, but Turbo Tax is checking box F indicating LT transactions were not reported to you on Form 1099-B. Not sure what is triggering this to flag Box F.
