Originally tried to post this in the wrong thread.
Note: I know the real reason that Deep Jungle wasn't included, this is just my in-universe take.
In CoM, all of the worlds (save for Castle Oblivion) are fabricated from Sora's memories. It's logical that Sora simply forgot about Deep Jungle.
But why?
Because Deep Jungle is the one world where Sora and Donald had a falling out. Sora tried desperately to forget that they were ever not friends, and it worked.
Note: I know the real reason that Deep Jungle wasn't included, this is just my in-universe take.
In CoM, all of the worlds (save for Castle Oblivion) are fabricated from Sora's memories. It's logical that Sora simply forgot about Deep Jungle.
But why?
Because Deep Jungle is the one world where Sora and Donald had a falling out. Sora tried desperately to forget that they were ever not friends, and it worked.