Step by step process.
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Import Fbx as Prop
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Force to 60fps
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Pick parent, assign to Root
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Transfer Skin Weights
Works like a charm, results as expected. -
Save asset
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Delete from scene
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Re-apply saved asset
Weights have changed in some way.
For example, because I can’t upload an image to this post. Setting up a shirt with changeable sleeves, where the base shirt is closer to a tank top, and the left and right sleeves can be attached.
When first set up and tested, it would move and work properly. Then, when re-applying, the sleeves would no longer line up with the torso section of the shirt. Character Creator, you did so good from the start, why would you change it?