While Wolverine is gallivanting around in the past with the X-Men: First Class cast, though, Kitty Pryde is injured, and her future hold on Wolverine becomes tenuous. In order to preserve the time travel bond, then, the X-Men must find Rogue, who has the ability to absorb any mutant power. Unfortunately, Rogue is being held prisoner at Xavier Mansion, which has been transformed into a Sentinel-guarded military base, and the mission to find and rescue her — an expensive, lengthy sequence that involves Professor X, Magneto, and Iceman (Shawn Ashmore) — was sliced from the film in postproduction after Fox executives worried it would pad the running time to over two and a half hours. Rogue is still brought in briefly to absorb Kitty's power and tend to Wolverine, but the machinations to get her there will now happen offscreen.
The thing is, if you've seen the movie, the "Rogue getting Kitty's powers" part didn't even happen