Part won't move in Animation Editor after welding with Motor6D

I’m about to freaking scream as loudly as I can because of my anger.

What do you want to achieve?

  • I expect my part to be moveable in Animation Editor.

What is the issue?

  • Okay, so I welded it with Moon Animator 2, using Easy Weld tool. It made Body unmoveable. I tried to change the weld structure. It made Head unmoveable. I even installed Rig Editor plugin! The same issue.