Ampan, I used to work in the old Aurora House and I remember it being discussed the day after the accident and I can only assume it was discounted as not relevant as it happened hours before the aircraft reached Antarctica.
Were the air/ground tapes for the entire flight included in the enquiry? Did the enquiry just have the paper logs from the air/ground operators' position? As far as I know the HF operators typed the reports in real time and if the position was corrected as I heard discussed it should have been on those paper log rolls, plus on the audio tapes of course.
Certainly odd though as it was not something that happens very often, in my, modest, experience.