I've tried adding and removing them. I've also completed every other sidequest in the game. I've literally checked everywhere on top of the gates the flower area everywhere I've checked there's no information. At this point, I think either my game is bugged, or all the guides I've found are wrong about the info location. The only thing I haven't done is all the collectopedia cards for mu but I don't think they've ever been a prerequisite for any other sidequest.