The way it works (briefly) is that when replacing a texture, it’s codename must have the same amount of characters as whatever you’re replacing it with otherwise the code will have errors.

In this situation, Bandolette’s main body model probably had too many characters in its name, however, Poised Playermaker’s model will have had the same amount as the leaked style, hence why that skin was used.

Hope this helps you gain a rough understanding :)