Originally Posted by Smirnoff

I believe that the score is updated monthly towards the end of each month. Not sure what the time lag is between spend and updating of the score, but I think it is fairly quick. And the change of the score is triggered, as far as I can tell, not by buying a ticket, but by travelling on a purchased ticket.

As for your second question, again, I cannot be sure. But my hunch is that there may be a negative effect of MFUing, as the system looks at what fare you have paid, compared with the "cost" of that seat.

So, my guess is that, for example a LHR-JFK seat in J has a notional cost to BA of X. If you pay £4k for your ticket, your CIV will be adjusted by (£4k - X)/(CIV adjustment fact per £ spent). It was suggested before that the 1 CIV point = £250 of net revenue, but this has not been confirmed.

So, in this case, if the "cost" of that J seat was £1500 for example, buying a £4000 ticket, would result in net revenue of £2500, or 10 CIV points.

On the other hand, if you bough a £750 WT+ ticket and MFUed it to J, the net revenue would be MINUS £750. In this case, the effect COULD be MINUS 3 CIV points. Pure speculation, but possible.

I know that my CIV dropped 2 points after I did a GUFT from J to F recently. But that could equally be from lack of paid-for travel during that particular month, compared with the same month a year earlier (as it is calculated on a rolling year basis).

Interestingly, I just did a return in F for miles, and so far no change in my CIV. Which may mean that purely miles bookings do not have any negative effect on the CIV, or it may mean that my end-of-month adjustment has not occurred yet). Will be able to check again on tonight's flight, and tomorrow's for any change.

Any other thoughts?