It seems pretty cut and dry for people who play tournaments and read those rules. Not everyone does and I didn't even know that tournament rule existed. No real problem but I've wondered why they worded it this way. Nothing in the rules that I know of says anything like the tournament rule of discard actually mean keep face down.
It is in the current Rules Reference, and has been since the second core set came out:
When an Upgrade card is discarded, it is flipped facedown. The card is out of play for all purposes except when determining the total squad point cost of the ship to which it was equipped. If an Upgrade card is flipped faceup by a game effect, it returns to play equipped to the same ship.
Cool, I did not catch the change.
Thanks,