Bleaching does not mean death, but it is a warning sign. Corals can bleach with parameters out of whack, really high building block levels or way too much light or way too little... basically, extremes of anything that it requires.
You can also bleach corals by using too much GFO, LC or Organic Carbon and removing too many building blocks - you do not need a lot, but you do need some. Do you use any GFO, vinegar/vodka/sugar or biopellets?
It has some color and I do not see any tissue recession from the base, so if you figure out whatever it is, it will probably bounce back quickly.
If all of the parameters are good and you have tested your lights for a reasonable PAR, then it could just be from the move. If so, I would expect it to rebound soon.