For the record, IB has NEVER been good about posting FF miles IMHO. I got royally screwed during the last OW promo in the Fall because I flew IB from FCO to BCN in "B" class and BA Exec Club tells me a couple of months later that B class on IB is not mileage-earning, and thus that would not count as my 6th OW carrier on the promo -

So THANKS, IB, you cheated me out of 50,000 bonus miles (GRRRRRRRR!)

Just saying, if you're talking about economy class, be VERY careful with IB. Does BA Exec Club have the same stipulation this time around that the flight has to actually be in a mileage-earning class to qualify?
And exactly what ARE the class codes on IB that one can use when not traveling transatlantic and still get miles?