And this needs to be clarified!!!
Since our attack team is also our defense team, your answer @Bramble doesn’t compute!!
Only after weekly reset, the attack teams are reset/cleared/gone - unless the same requirement in an area is the same as the week before, then the attack team is saved.
After update 8.0 and when using an Immortal troop, our attack team is reset/cleared/gone, after exciting PvP or the game. So what about our defense team? Random troops again?
IF that isn’t a bug, then you changed it on purpose and somehow completely forgot to tell us.