Blender to Unity Import: Some bones do not animate properly when played onto an existing prefab

Questions & Answers
1

Hello,
I’m having a problem when importing character animation clips and playing them on an existing prefab that have the same rig.
When drag and dropping the model that holds the clip directly in the scene, the animation is fine, but when I play the animation onto my NPC prefab that has the exact same rig, some bones do not accurately update with the animation.

182629-animation-problem.jpg
182629-animation-problem.jpg1296×634 110 KB

Some more info: both have the exact same rig and reference the same avatar in their animators. The NPC prefab hold no animation, and is in a T-pose by default. In the rig import tab, I’m using Generic, not Humanoid. Both the rig and the animation where made in Blender 2.83.15

Any help or hint would be appreciated.
Thank you!

2

you need to make sure the rigs are in fact the same, I would do this by clicking on the bones in question while rest pose is enabled and comparing them in 2 windows.

3

So I managed to find a solution for this .
In Blender I need to make sure that every relevant bones move and be key framed at least twice in the animation. For example, if your feet are static, you can’t just key frame them once at the start, you need to make them move (even if it’s subtle) somewhere else in the animation. To me this is bug; key framing a bone once should be enough.