I would like to copy and paste mesh and (rigify) armature from a blender session to another blender session of even in the same blender 3D window,but part of the armature is not copied and pasted correctly and when I select the root bone to move the copied version,part of the face armature does not follow the rest. Do you know why it happens and how can I fix this behavior ? I have recorded a video to show you. You can find it here. Thanks.