I have an LX flight coming up in Oct that will see me requalify for BD*G based just on the outbound leg.

With a membership year end in mid-Dec, the return leg wouldn't get me to the 55k mark and with the supposedly impending M&M migration I see little benefit (apart from topping up my destination miles balance) to crediting this to BD.

Can I change the FFP details for the return (and does anyone recommend to which *A programme)?

My annual travel is generally a couple of TATL and not much European, and I'm not sure I will be up to M&M "SEN" levels in the long term.