NodeGraph.Copy

Create a new deep copy of this graph

public NodeGraph Copy();

Attempting to copy a NodeGraph using Object.Instantiate(myGraph); will only return a shallow copy.

To perform a full deep copy of the graph, use graph.Copy();

using UnityEngine;

public class GraphCopy : MonoBevaviour {

    public MyNodeGraph prefab;

    void Start() {
        // Create a new deep copy of the node graph
        MyNodeGraph copy = prefab.Copy() as MyNodeGraph;

        // Check if a node in the new copy points to the prefab
        if (copy.nodes[0].graph == prefab) Debug.LogError("Referencing prefab");
        else Debug.Log("Referencing new copy");
    }
}