Tom Young, I agree with what you say. TurboTax is the one that decided to use Code M, not me. I have tried to report the trade correctly on Form 1099-B Worksheet and the Capital Gains Worksheet, by listing the date of sale, proceeds, the "term" of the security sold (long or short) and the cost basis. TurboTax came up with the notation "See Stmnt" for Date Acquired and Date Sold, for unknown reasons. I believe the notation is not needed, as you describe.
