Why don’t I see the reach key when I reapply the iMotionPlus after saving the character’s right hand reaching to the head?

Currently, the reach key for reaching the self bone cannot be saved in iMotionPlus.

Posted Last Year by Reallusion Support
https://kb.reallusion.com/Product/53208/Why-don’t-I-see-the-reach-key-when-I-reapply-the-iMotionPlus-after-saving-the-character’s-right-hand-reaching-to-the-head