Hi friends ...

There is some procedure, when I transfer the movements of an actor for a character with other proportions (shorter legs, longer arms) The IK seems not to be working in these conditions.

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Do you mean when you try to bring a custom charcter file into iPi to view it animated?

Or, do you mean when imported in an external 3D editing program?

The BVH or FBX file should adjust to the size character, relative to its size for the motion captured, if done properly in a 3D editing program.

May be some issues with reach or ground contact that can be edited for better appearance.

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