I had already added ECBI to a points booking - just last week - and canceling meant losing ECBI (I had only added it to 2 of our 3 tickets since I should be getting my companion pass in the next few weeks, so the 3rd ticket will be canceled & changed to a companion pass flight). But I was able to cancel & rebook Business Select fares, and we still got points back. I had been thinking of changing our flight down to an earlier flight, but without the promo it would have meant an increase in the points needed. Now we have the flight I wanted, boarding in A1- A15, and spent fewer points! And I don't even mind that I paid for ECBI that we no longer need, since I did it to take advantage of the 1 day 10x points on SW spending last week, and it pushed me over the threshhold for the companion pass!