I've had this happen to me recently during a TNG episode. I remember the episode "Sarek" differently than the episode I watched on Netflix two months ago. And the way I remember it is the same way you remember this episode. I remember lines, but I remember them differently. I remember Picard screaming about Spock... Almost as if I had watched a scene that was filmed, but they decided to re-shoot with a different take on the scene.