Disable child manipulation when parent is manipulated

[Maesla]

Hello,

I have this hierarchy

• Parent (ObjectManipulator, can rotate and move freely)
  • Child (ObjectManipulator, can move in its local z axis)

The child should only move along the z axis. I get this behavior using MoveAxisConstraint

However, I have a situation where a user can manipulate the child with one hand and the parent with the other. If I rotate the parent with its objectManipulator while I grab the child with the child objectManipulator, this constraint get broken, and the child is not longer in the z axis

I have thought of a way to solve this, disabling the child manipulation when the parent is getting manipulated, so I have thought in 3 different approaches

1. Enable/Disable the child ObjectManipulator at OnManipulationStarted/Ended parent events
2. Create a custom constraint (somehow)
3. Create a IXRSelectFilter and add it at the child in its Starting Selected Filters

The one I like the most is the third one and I have created this filter

using UnityEngine;
using UnityEngine.XR.Interaction.Toolkit;
using UnityEngine.XR.Interaction.Toolkit.Filtering;

public class ConflictFilter : MonoBehaviour, IXRSelectFilter
{
    public XRBaseInteractable other;
    public bool canProcess => isActiveAndEnabled && other != null;

    public void Start(){}

    public bool Process(IXRSelectInteractor interactor, IXRSelectInteractable interactable)
    {
        return !other.isSelected;
    }
}

My question is:
Is this approach correct? Can I have some some side effect that I am not taking into consideration?
Might it be too overkill? Is there any built-in solution to situations like that?

Thank you