I am in the situation that I have EBG secured until FEB 2012 - so for the rest of the year I would like to build some status and collect miles to M&M instead of EB. What status benefits from EBG can I continue to use even if I register my M&M number in the reservation or at CI?

Some are more obvious - like using *G lounge and fasttrack by showing my EBG-card, but more luggage and hoping for op-ups is probably out of the question?! Any other who's been in the same situation and know how to handle this in the best possible way?

I have searched the forum but not found this discussed before. Hope I haven't missed anything obvious...