I found that TT had reversed the amounts from the basis and the gain/loss from the original uploaded 1099, for that stock sale. There was a loss, so the figure that got put in as basis is negative.
When I go back here to the Sales section total for short term sale and not reported to the IRS, the amounts entered there are correct.
The stock in question was a public limited partnership, if that matters.
I do not know how to correct the situation. I cannot edit 8949s, and correct the error there.
