it is a wash sale and loss was disallowed. For the replacement shares that was also sold in 2017, i used "enter additional info on my own" in order to add the deferred (disallowed) loss to the cost basis. however, in the Wash sale loss disallowed box, turbotax only allows to enter as positive amount and treated like a gain and subtract it from the cost basis instead of adding it to the basis cost. What should I do to add the deferred loss to the cost basis of replacement shares.
