Without trying to make any assumptions, I found some of the earlier maps relying on FAB PowerPoint presentations overlaid with BEA debris data points to be rather ambiguous.
Many of the FAB graphics appear to be designed for media consumption and
minor? details such as the "Ultimo Reporte" position do not appear in the correct positions.
I know 'rer47' mentioned some pages back the link to:-
Final Route of AF447 - an Analysis and the map associated with it, along with some assumptions made could be worthy of consideration.