Will downgrading myself a GS-7 OCONUS take away my current LQA?

I am currently a GS-11, but I really want to go back to Japan, but with how hard it is to find a job, I am willing to take anything. The pay isn't much of a concern for me as I am also 100% disabled. So if I am to apply to GS-7 and somehow gets it, will my current LQA be taken away?