FYI, I just received a response from one of the Turbotax Employee Tax Experts. She asked me to send a "diagnostic tax file" (my return without identifying information). I declined but provided her with our dialogue on the issues and suggested that they (1) explain what went wrong with the 2022 program's processing of capital losses for AMT purposes and (2) change the 2023 program so that the Schedule D worksheet automatically imports the correct numbers from prior years rather than requiring the user to figure out what values to insert. If Turbotax produced a separate AMT Schedule D, it should use those numbers; if not, it should use the regular tax numbers. As I found out, leaving these numbers blank produces an incorrect AMT capital loss carryover number.
