k-1, 1231 gain, error asks for cost basis and sales price, isn't this taxing twice since its picked up as a 1231 gain on schedule D already

[gpguidry]

Entering K-1 with a 1231 gain. Get an error message to enter date purchased and price and then sale date and price. I enetered all the information that was required by the program. When I go to the schedule D it shows up as 2 different entries and looks like they are being taxed twice. I don't have 1231 gains often so I am unfamiliar with how the program should work for this.