I'm the OP and did mine on the form called 'QBI Ded Summary' - I zero'd out line 3. It did indeed remove the carryforward loss from other areas of my return, though I remain a tad uncomfortable indicating that I had zero loss in a previous year when I previously reported that I did. I think this is the correct place to do it in TurtboTax though. Also, TT throws off an error when you do the 'review for errors' but I'm just ignoring that.
I assume it won't matter to the IRS that I'm lying on this form since it doesn't impact my return amount, but if anyone wants to comment on whether there's any concern about lying, then I'd love input there.
