We just moved a massive one and it’s struggling a bit, BUT we didn’t do it right as per first answer in this thread: more of a spontaneous “let’s do it!”, ably unassisted by small children dragging it rather than using a tarp, roots broken to get it out, because of mad previous owners planting system, hole too small (mind you I’ve never bothered with the “twice as big and deep” thing and nothing’s ever died), etc.
Plenty of rain here and it’s putting on flowers but discoloured a bit; carrying on watering well and so far it’s surviving and will hopefully eventually recover, but I’m not expecting it to be a great beauty for another couple of seasons while it recovers.