Joan, Titanic "documentaries" are hardly renowned for reliability. In any event, the only one I saw which was named "Titanica" was an IMAX film with footage of the wreck to the exclusion of just about anything else. No passenger or crew lists were presented. If there's another film out there...and that's certainly possible...then most likely what you were looking at were the original transcriptions, all of which are loaded with errors.
The lists here on ET were put together after years of work from some of the top researchers in the field with an eye towards rooting out those mistakes.