Originally Posted by DL-Don

They can.

I was going to Asia in my fav 777 seat, 7A, and the equipment was changed to the newer configuration with fewer BE seats. For whatever reason, I was moved out of 7A into some random seat. This happened on a Saturday and I caught it shortly after it happened. I called, talked to a supervisor and got put back into 7A. I didn't know where the random person that landed in 7A was moved nor did I care.