TurboTax classifying Box F and C the same for 1099-B

[JacksonCat]

I have a sale where I didn't receive 1099-B. I create an entry in TurboTax for sales not reported on 1099-B and enter the values. As soon as I feel in proceeds and cost basis, Turbo Tax Deluxe calculates amount owed based off my marginal rate. Selecting box C or F (long term/short term) doesn't change anything. Same with altering date acquired. I would expect the long term to use the long term rates, but I'm not seeing that behavior.

Any tips or am I misunderstanding this? 

[JacksonCat · Accepted solution]

Nevermind, mark this as resolved. I had losses in box D, and box F gains were offsetting the losses.