In this case i'm trying to understand better how to rip worlds that use MMD motions and all of that. since i want some of the motions that the infamous world with NSFW motions "fk me"

I'm learning, and I'd like to know if there are any tips or, at the very least, where I can find information on how to repair the project from the ripped file—or simply transfer the content to a version of the world built from scratch.

This is one of my first posts here, and I'm hoping for at least some help with information to achieve my goal—or at least where to find documentation.