Is it possible to export only deformed bones and not their parent bones?

[gor-rot]

Bringing non-deforming bones to Unreal Engine, such as ORG and MCH bones (from Rigify), will make the hierarchy look messy with unnecessary bones. So, is it possible to make the addon extracting only the deform bones from the main rig controller and then export them?

[xavier150]

Hello sadly that not possible.
I recommend you make two trees in your armature. One for the deformable bones only and one for the rigs bones.