Here is the gist of my conversation with the OB team just now:
-can i add tickets that have been flown but did not have the ob number on the original booking?
- no, I can only book flights.
- what happens to those tickets? Previously it was only possible to add the ticket details for up to 3 months after departure, so are we now losing the tickets/points from February?
- can't do anything apart from booking flights.
- any plans on when is the portal going to be up? I was previously informed end of April
- no info, the portal is still undergoing maintenance
- what about the balance, is it recording the flights flown?
- your balance is XYZ but it is possible that it is not updating [i can confirm it is not updating] I would imagine the company will make sure that customers are compensated adequately and as soon as the portal works you will be notified.

In all honesty, there can't be SO many accounts that BA is incapable of getting them typed up in three months. I'd put my chip on 'data disappeared', just like what I did on my first digital camera, when on the returning flight from a two week holiday, i pressed the 'format memory card' button. I thought 'what could go wrong?'

Strongly suspect someone at BA pressed the wrong button repeatedly!!