After you file

With all of that said, there are still two viable work arounds.

Option I

To be able to post a negative value to form 1099-B box 1d follow these steps.

1. Select the option for a 1099-B
2. Select to type it yourself
3. Enter Bank
4. I'll enter one sale at a time
5. Enter the stock data and leave 10d BLANK
6. When you hit Continue you will get a RED error message
7. At the bottom of the screen select Allow me to continue with incomplete information. [Continue]
8. Any less common items will be blank.  Select Done
9. No this is not employee stock
10. Select the last item An adjustment is required for reasons not already covered.
11. Enter the negative number that you had in Box 1d.This will complete the transaction.

Option II

Your brokerage statements should include a summary of your transactions, grouped by sales category, for example, "Box A short-term covered" or "Box D long-term covered." You'll enter the summary info instead of each individual transaction.

1. Open or continue your return (if it's not already open) and search inside TurboTax for the phrase stock sales.
2. Select the Jump to link in the search results.
3. Answer Yes to both Did you sell stocks, mutual funds, bonds, or other investments? and Did or will you receive a 1099-B form or brokerage statement for these sales?
   • If you land on Here are all your 1099-B sales, select Add sales from a different brokerage. Then answer Yes to Did or will you receive a 1099-B form or brokerage statement for these sales?
4. When asked how you want to enter your 1099-B, select I'll type it in myself.
5. Select or enter your brokerage on the next screen and continue.
6. On the following screen (Tell us about...), answer the questions until you reach the next screen. Select the second option, Let's enter a summary instead, and select Continue.
7. You'll now be able to enter the total proceeds (sales) and cost basis, along with the sales category. Refer to your 1099-B for the amounts and category. When finished, select Continue.

When you are done, you'll eventually come to the Here's a summary of your broker sales screen where you can edit, delete, or enter more sales.

You will have to mail a copy of your 1099-B to the IRS.  TurboTax will produce a Form 8453. You print the Form 8453 and attach the brokerage statement(s) to it. 

@cparmba521