If you compare both model's hair weights you'll notice that the vertex weights differ between Lod0 and Lod1. The reason for that is during gameplay section model's physics bones designed to work with Lod1 model's weights (weights for KawaiiPhysics).

You need to import Lod1 of the original model and transfer necessary physics weights from it to duplicate model of yours. Once you have finished modifying your model, there is one more important step. psa animations of the model you are modding to check any armature and weight issues (Some animation files may not work) When importing custom models and before transferring weights, implement the model to original armature and make sure that resting pose is identical to original model.Make sure that model's name is same as original.

Leaving unassigned materials on model can break material order. Assign the materials you don't use to a hidden face manually or use dummy materials plugin. It is possible to use materials from other Snowbreak models but you can't exceed material number of the model you are modifying.

Don't touch any of material's properties, their order and names.

Whether you're modifying an existing model or importing a custom one, you should keep your original armature as it is.

However there are some important tips to not break your model.

This process is mostly up to your experience of Blender.

If not your importer/exporter couldn't get materials properly.

Make sure that your model is imported with correct material names (e.g.

Your combined model now includes all the vertex groups that were missing in the. Switch to orthographic view and change Clip Start/End to work better. The addon will automatically scale Blender scene so your model will be in correct scale. psk from addon sidebar menu without touching any of psk/psa plugin options. This guide will assume that modders have installed the mentioned plugin. There are different plugins available for importing psk/psa files, but the one listed here is heavily recommended.

Instaling Snowbreak Containment Zone