User blog comment:N7/Battlefield 3 Beta is an older build of the game + Changes from Beta to Final game/@comment-173.19.74.65-20111002162215/@comment-4431589-20111003225349

@BBP09: If we walked on walls, we wouldn't need ladders or elevators.

@Heatedpete: In PS3 beta, ground deformation isn't disabled and I have a love/hate relationship with the under the map glitch because you'll see it in my feedback post.