I have no idea, but for years I have never used the long term short term codes. I enter -010100 as purchase date and -0102 (it fills in current year) for sale date for all long term sales. In enter -0101 (it fills in current year) for purchase date and -0102 (it fills in current year) for the sale date for all short term. The result is the Schedule D shows various and puts then in the proper place.