TurboTAx will automatically generate IRS form 8949 when you report a sale or disposition of assets.
Please see this TurboTax Best answer.
ThomasM125's advice above is correct for the question asked.
Rather than try to edit a large form 8949, the 8949 was to be deleted so that 1099-B broker information can be downloaded a second time into an empty form 8949.
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