Pokemon battle revolution problem [nooby here]

[Xcat13]

Hi!

I extract this model with ninja ripper but every time i try to optimize it, alwais loses vertex or give me problems, someone can help?
Ty

https://www.dropbox.com/s/93r851bvkambxw...R.zip?dl=0   <----model here on Ninja Ripper files+textures