RogueLeader said:
It would be cool to see the guard fighting Rey lose that blade in the previous shot of them fighting in the distant background. There’s a point where there is a big flash of light where they hit blades, and I feel like it could be removed at that point to imply that Rey cut it, explaining why the other blade is gone in the next shot of them.

Alrighty, RL! One may never be able to notice it, but in the distant BG, Rey now knocks off the blade in the praetorian’s left hand (sending the blade falling).

Praetorian Knife Removal (disarm at 0:06, removal at 0:22)
https://vimeo.com/394568223
pw: fanedit