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Hi, I'm relatively new to Swift and ARKit, SceneKit and the likes of which you'd use for typical AR applications. TL;DR, I have an app with a reset button that pauses the sceneView, deletes all child nodes of the root node of sceneView.scene, and re-runs my overridden version of viewWillAppear! However, after this reset, my app refuses to detect my anchors (.arobject scan assets) in the scene. Any help would be much appreciated. I did read up on the documentation and relevant forum & SO posts and provide my code and a list of things I tried down below. my overridden viewWillAppear override func viewWillAppear(_ animated: Bool) {         super.viewWillAppear(animated)                  // Models occluded by people are shown correctly         if #available(iOS 13.0, *) {             print("Segmentation with depth working!")             ARWorldTrackingConfiguration.supportsFrameSemantics(.personSegmentationWithDepth)         } else {             // Fallback on earlier versions         }                  guard let referenceObjects = ARReferenceObject.referenceObjects(inGroupNamed: "computer", bundle: nil) else {             fatalError("Missing expected asset catalog resources.")         }         configuration.detectionObjects = referenceObjects         print(configuration.detectionObjects)         sceneView.session.run(configuration)     } my custom reset function @IBAction func reset(_ sender: UIButton!) {         // Pause scene view         sceneView.session.pause()                  // Remove button that redirects to link         DispatchQueue.main.async {             self.sceneView.subviews[1].isHidden = true         }                  // Remove all child nodes         sceneView.scene.rootNode.enumerateChildNodes { (node, stop) in             node.removeFromParentNode()         }                  viewWillAppear(true)     } list of things I tried put everything into viewWillAppear and just trigger viewWillAppear on button press call the custom reset function shown above on button press call overridden viewDidLoad (yes, I know this is *****, but I wanted to see if it fixed anything) Currently, my code is using the second setup from the list above.