No, I'm talking about this:
If a player has two copies of the same upgrade on a
character, and both of those upgrade dice are in their
dice pool when they have to discard an upgrade from
play, the player can choose which die to remove and set
aside.
Actually, this lines up with the basic rules, which state that you only track which dice came from which character, not from which specific card.
So you have not read the tournament rules, ok, here it is for you:
When a player controls multiple cards or effects that use a
die with the same collector number, he or she must designate
the specific card or effect that each die in their dice pool
corresponds to.