Continuity mistake: When Jill Valentine jumps out of the Umbrella chopper, her outfit and guns differ from what she was wearing and carrying in the post-credits scene of Resident Evil: Afterlife. (00:05:55)
Continuity mistake: When Alice is being chased in the corridor of the Tokyo simulation, the woman in the blue dress is a good distance away from her. However in the following shots she is much closer. (00:21:15)
Continuity mistake: When housewife Alice is trying to escape with her daughter in the laundry room, she slams a mop through the ceiling. When she slams the mophead through the ceiling the last time and pulls it out, the hole left behind is maybe one foot across. When she lifts her daughter up into the hole it is now a good two or three feet across and reaches from ceiling support beam to support beam. (00:09:20)
Continuity mistake: One of the zombies fires an RPG into a yellow van. The van then moves forward and bumps into another car in front of it. When Alice jumps through the van, they have moved apart again. (00:50:45)
Continuity mistake: When the Tokyo sequence is started, Gill's hair is untucked from her ear. When the rain starts however her hair is tucked behind her ear. (00:19:00)
Revealing mistake: At the start during the rewinding segment we see a net return to an Umbrella soldier's gun, and a guy get up on the screen left with a bullet wound in the back. (This whole part is in reverse at this point of the film) The guy that gets up you can see the outline of the squib pack that was used for the effect. (00:03:18)
Continuity mistake: When the Rolls Royce jumps through the yellow van, the Spirit of Ecstacy (the emblem of Rolls Royce) breaks off, but at the end of the chase, it's still in place. (00:52:55 - 00:55:50)
Continuity mistake: When the car comes to a stop after killing the licker, the front wheels are straight and flush with the body of the car. When the camera changes the wheels are turned over to the left and sticking out. (00:52:20)
Revealing mistake: When we see the Kremlin in the Rolls Royce chase, there is an overhead shot of the car skidding with tyre marks in front of the car from previous takes. (00:51:10)
Continuity mistake: In Resident Evil, Alice's scar is on her left shoulder. In this film it's on her right. (00:15:50)
Chosen answer: Jill was unconscious at the time, while Claire was awake, therefore the loss of memory may differ by state of mind, or vary from person to person.