Ah, I see. But the point I was making is that SQ would award 100% miles to its own members on a SQ W fare. So if you were to book on of these fares, then the decision about which FFP to credit the miles to is very important because you could get full mileage (KF), 50% mileage (LH M&M) or potentially no mileage (BD DC).
Therefore I was contesting what
shortfinals had said here:
Originally Posted by shortfinals
The one thing i've learnt (I could be all wrong with this) about whether a particular fare earns miles or not to refer to the airline you're flying, not your FFP. It matters less which program is being credited.
In the above situation (purchasing a SQ W fare) it matters very much which FFP is being credited.