Linked Anim Graph in Post Process Anim BP does NOT work after remove ControlRig Track

// add 
#include "Animation/AnimNode_LinkedInputPose.h"

void FControlRigBindingHelper::UnBindFromSequencerInstance(UControlRig* ControlRig)
{
	check(ControlRig);	if (!ControlRig->IsValidLowLevel() ||
	    ControlRig->HasAnyFlags(RF_BeginDestroyed) ||
		!IsValid(ControlRig))
	{
		return;
	}
	
	if (UControlRigComponent* ControlRigComponent = Cast<UControlRigComponent>(ControlRig->GetObjectBinding()->GetBoundObject()))
	{
		// todo: how do we reset the state?
		//ControlRig->Initialize();
	}
	else if (USkeletalMeshComponent* SkeletalMeshComponent = Cast<USkeletalMeshComponent>(ControlRig->GetObjectBinding()->GetBoundObject()))
	{
		if (!SkeletalMeshComponent->IsValidLowLevel() ||
			SkeletalMeshComponent->HasAnyFlags(RF_BeginDestroyed) ||
			!IsValid(SkeletalMeshComponent))
		{
			return;
		}		UControlRigLayerInstance* AnimInstance = Cast<UControlRigLayerInstance>(SkeletalMeshComponent->GetAnimInstance());
		if (AnimInstance)
		{
			if (!AnimInstance->IsValidLowLevel() ||
                AnimInstance->HasAnyFlags(RF_BeginDestroyed) ||
                !IsValid(AnimInstance))
			{
				return;
			}			AnimInstance->ResetNodes();
			AnimInstance->RecalcRequiredBones();
			AnimInstance->RemoveControlRigTrack(ControlRig->GetUniqueID());
		}		FAnimCustomInstanceHelper::UnbindFromSkeletalMeshComponent< UControlRigLayerInstance>(SkeletalMeshComponent);		
                ////////
		// add 
		if (UAnimInstance* postProcessAnimInstance = SkeletalMeshComponent->PostProcessAnimInstance)
		{
			postProcessAnimInstance->InitializeAnimation();
			if (FAnimNode_LinkedInputPose* inputNode = postProcessAnimInstance->GetLinkedInputPoseNode())
			{
				inputNode->CachedInputPose.SetBoneContainer(&postProcessAnimInstance->GetRequiredBones());
			}
		}
		////////
	}
	
}