For those interested in the loss of the shadow as mentioned before you need to contact the P1 team and advise them of your flight details and request a shadow. Here is an email for a flight to LHR next Thursday after requesting the shadow.
Good afternoon Mr Ansett,
I will be able to request a blocked seat for these flights 3-days prior to departure. I have set a reminder in the system to do so for both outbound and return flights. Please let me know if there is a change of travel date so that I can update the system.
Kind regards.
So wish they would get this sorted