This happens very often, then you get a K-1 that shows the sale, and then also get a 1099B.
I like to show the sale in the K-1 section, as it has my capital account there.
However, you can show it in 1099B investment sale section, or the K-1 section.
Only show the sale once, and keep the information in your tax file.
If the K-1 has income or expenses for your share while you owned it, you would still need to enter that part, just not the sale information as it is already reported.
If it is the case that I don't need to do enter a K-1 if box 1 is negative, why does the Turbo Tax software prompt for more information?