Exactly this. Bad input data from E*Trade/MS imported 1099-B. Deleted the problematic import and input the data manually using "group totals" method. Side benefit is that Form 8949 is *way* cleaner without trying to list every fractional DRIP share which had been acquired over a couple decades as a separate sale transaction in a batch sale. I spent far longer beating my head against TT trying to figure out why it had the bad code and trying to edit it than I did just manually inputting the 1099-B data.
