Hi, at the moment, support for scale with IK Retargeting is quite limited, unfortunately. The retargeter will strip scale out of the source transforms, and instead, stores the translation of the bones, which can then be applied to the target mesh. So that means if you’re just scaling down the bone, you can replicate the scale behaviour with translation on the child bone. Here’s where you can set the translation mode for your chains in the retarget asset:
[Image Removed]But if you need to do more than scale down the bone, which it sounds like you do, then this isn’t going to give you what you need. The dev team know that this is something that needs to be addressed with the retargeter, but I’ve added a feature request ticket anyway to make sure that it’s tracked.