@BillM223 I have successfully deleted the 1099-Div from the payer in question, but that didn't remove the ordinary total dividends from the payer in question, which still appears in Schedule B Part II and in the smart worksheet for Schedule B (of the printed tax return) even in the absence of a 1099-Div worksheet from the payer in question. How is this possible only a TT software expert can guess.
Please assume as you suggest in your post that the "data has become "stuck" and won't delete when I delete it in the input". Any solution for manually purging the bad piece of data?
