Negative amount not allowed in Sch D Part I line 1b col g ( adjustments)

My 1099-B has a neg amount in this field ( Market Discount ) and is not allowed when using the Business Step-by-Step version.   (as an aside )A neg amount  is accepted in the Personal Prem version of TT.  

 

I was wondering if I should adjust the "Cost" amount to reflect this adjustment in the Business version ?  

 

I also tried using Form 1099-B worksheet line 8a (Accrued Market Discount) this will let me enter the adj as a positive number,  but amount is not reflected in the result on line 17a ?