Adding a prop to the Unreal 4 Mannequin

Hello, community. New guy here. I’m an animator jumping from Maya to Blender. I’m trying to rig a prop I modeled to the Unreal 4 mannequin. It’s just a basic axe with some control shapes. But when I open an empty file and link the mannequin file with the axe, if I create a proxy for the armature, I’m not able to see what I select in Pose Mode. Probably because of the way I rigged the axe, but I don’t know how to solve it.

Attached is a Print screen of the issue. I’m able to select and move the controllers but I can’t see what I have selected on the viewport. It’s like if the original armature is overlapping the proxy armature.

Any help would be appreciated. Thanks