Re: How to remove/edit bone animation keys of Character.
Hello,
1) Following images are my understanding for your question.
① The character is located on the iClone screen.
② A Pose is added on the Character.
③ Added some keys for rotation for the arm.
Fig1. Sample image for
①, ② and ③.

2) How to reduce the length of the motion Clip.
・Drag the Play Head to move back to your desired time frame. (Blue)
・Click the triangle button to show the sub-tracks and keys. (Yellow)
Fig2. Drag the Play Head to move back to your desired time frame. Click the
triangle button to show the sub-tracks and keys.
3) Double click on the key you need to edit to show the Edit Motion Layer.
(Pink)
Fig3. Edit Motion Layer Panel
4) Click on the key you need to remove and select remove on the popup panel.
Fig4. Click on the key you need to remove and select Remove on the popup menu.

Thank you,
Hiro