I fly already many years with TG , i am TG*GOLD , but i future i will fly probably more SQ then Thai, what is adviceable to do.

Become SQ Frequent Flyer and stay also TG Frequent Flyer,
but what to do with credit my miles. Because when I fly TG the miles will be credit to TG , and when I fly with SQ, the miles will be credit to SQ,
Calculate the Flights together i have miles enough, but show then seperate, it will be maximum of Silver


so will loose my *G status and not allow to visit the Lounges anymore.

Does i think right or does i think wrong or what to do..

please advice

I know, for the upgrade i can use point i accumulate by the airline i booked.