Accrued Market Discount/Cap. Gain on Treasury Bond - Won't Match Brokerage Statements

I've seen the other post regarding Box 1F (Accrued Market Discount) being shuttled to Sch. B as interest and the 'Learn More' explanation in Turbotax (TT) stating "USUALLY, if accrued market discount is reported on your 1099-B ... we'll include this amount as interest to Sch. B". This does not match the information on my 1099-INT or the 1099-B (capital gain) received from the brokerage firm for the one treasury bond I had. The 1099-B shows $1000 capital gain and Box 1F = $1000. TT imported the items with the $500 as interest (correct from 1099-INT) and also the $1000 as interest (on Sch. B) with a capital gain = $0. Deleting the import and manually entering the data - including box 1F - yields the same result. The only way to make TT match my printed brokerage statements is to make box 1F (Accrued Market Discount) = $0. Then, TT shows $500 interest and $1000 capital gain - but the data in TT no longer matches the 1099-B for box 1F.  There was no effect on the state return.

 

What is wrong and is it an issue if the entered info (Box 1F) does not agree with the info provided to the IRS from the brokerage firm even though that seems to be what's required to get the TT information to match the paper statements?