There are a number of deleted scenes (specifically in the prequels) that add a lot of interesting information to the backstory of events and characters in the films.
One that jumps out at me is the meeting in Episode 3 between many of the founders of the Rebel Alliance.
However, there is a scene where Shaak Ti is killed by General Grevious.
But she appears in the video game, The Force Unleashed. I realize though that the Force Unleashed is considered non-canon as of now but I'm still curious considering that these seem to both be from lower sources of canon and were both created before the Disney buyout.
What is the canonicity and status of these scenes? Obviously they can't be considered G Canon because of times where we have alternate scenes that contradict the locations/characters of actual movie scenes.