After reviewing the global matrix comment here and a similar comment on greyscale gorilla, I again tried piping the global matrix into a new camera and baking the new camera’s animation. Finally, AE picked up the data. I have a sneaking suspicion that I might have accidentally chosen the “Current Frame” option in the Output Settings. That’s why the camera seemingly only had one keyframe in AE. Anyway, it’s working now and thanks to everyone for the advice.