For Fidelity 2024 Supplemental Information - I don't see the basis (field Z) adjusted for the wash sale. I see a field for Wash Sale Disallowed. Are you adjusting Field Z for the Wash Sale Disallowed field?
The difference between the Ordinary Income Reported (y) and Adjusted Basis field (z) that I show, do NOT align with the amount in the Wash Sale Disallowed field (all refer to Supplemental Info and not base 1099-B).
