Had this come up last night, Imperial Discipline says you can remove it to change either a character or upgrade die of the attached character. So the question is, can you use it on Krennic's Death Trooper die?
It's definitely not an upgrade but you could argue that it could be considered "one of Krennic's character dice". We decided to say yes ID can affect the DT die since we had to make a call but were definitely unsure. Is there a ruling on this? Or at least a consensus?