Impenetrable walls

[Ip Man]

I was wondering, when Xehanort was defeated in KH, all the walls came back to normal and the walls supposely came back. Therefore, Sora wasnt gonna be able to visit all of those worlds again. Is it explained in KHII why Sora can travel to other worlds if the walls were restored?

 

[Yoda_Mickey]

Probably for the same reason the heartless are back?

 

[Americo]

They broke down the walls again?

 

[heartzkreuz]

the walls and the heartless CANNOT COEXIST. when the heartless appear in the other worlds the walls break down or the walls are broken down by the heartless. the heartless break the walls which allows interworld travel.

 

[violent_anger]

yeah, why do u think sora could go to other worlds in the first place? when a heartless goes to a world, they tear the walls of it down.