Twist Bones not Connected in the Default first person arms Skeleton

Hello,

I’m using the default 3rd person rig in the third person Template. I want to make Animations for my First person Game. So I’ve swapped the skel mesh for the arms only mesh. I’m IK Mode

However, The twist bones apparently are not connected? The Arms skeleton are suppose to be identical to the Third Person Manny. Here is a Video

I’ve been working at this a few hours, I’ve tried IK retargetors. Is that the anwser?