For final shader generation use the master node.

MaterialGraphProject/Assets/UnityShaderEditor/Editor/Data/Graphs/MaterialGraph.cs

 
         public string GetShader(string name, GenerationMode mode, out List<PropertyCollector.TextureInfo> configuredTextures)
         {
-            PreviewMode pmode;
-            FloatShaderProperty outputIdProperty;
-            return base.GetShader(masterNode as AbstractMaterialNode, mode, name, out configuredTextures, out pmode, out outputIdProperty);
+            return masterNode.GetShader(mode, name, out configuredTextures);
         }
 
         public void LoadedFromDisk()

MaterialGraphProject/Assets/UnityShaderEditor/Editor/Data/LightweightPipeline/PBRMasterNode.cs

                 });
         }
 
-        public override string GetShader(GenerationMode mode, out List<PropertyCollector.TextureInfo> configuredTextures)
+        public override string GetShader(GenerationMode mode, string outputName, out List<PropertyCollector.TextureInfo> configuredTextures)
         {
             var activeNodeList = ListPool<INode>.Get();
             NodeUtils.DepthFirstCollectNodesFromNode(activeNodeList, this);
                 activeNode.CollectShaderProperties(shaderProperties, mode);
 
             var finalShader = new ShaderGenerator();
-            finalShader.AddShaderChunk(string.Format(@"Shader ""{0}""", name), false);
+            finalShader.AddShaderChunk(string.Format(@"Shader ""{0}""", outputName), false);
             finalShader.AddShaderChunk("{", false);
             finalShader.Indent();
 

MaterialGraphProject/Assets/UnityShaderEditor/Editor/Data/Nodes/IMasterNode.cs

     public interface IMasterNode
     {
         SurfaceMaterialOptions options { get; }
-        string GetShader(GenerationMode mode, out List<PropertyCollector.TextureInfo> configuredTextures);
+        string GetShader(GenerationMode mode, string name, out List<PropertyCollector.TextureInfo> configuredTextures);
     }
 }

MaterialGraphProject/Assets/UnityShaderEditor/Editor/Data/Nodes/MasterNode.cs

 
         }
 
-        public abstract string GetShader(GenerationMode mode, out List<PropertyCollector.TextureInfo> configuredTextures);
+        public abstract string GetShader(GenerationMode mode, string name, out List<PropertyCollector.TextureInfo> configuredTextures);
     }
 }

MaterialGraphProject/Assets/UnityShaderEditor/Editor/Drawing/PreviewManager.cs

                 if (node is IMasterNode)
                 {
                     List<PropertyCollector.TextureInfo> configuredTextures;
-                    shaderData.shaderString = ((IMasterNode)node).GetShader(GenerationMode.Preview, out configuredTextures);  
+                    shaderData.shaderString = ((IMasterNode)node).GetShader(GenerationMode.Preview, node.name, out configuredTextures);
                 }
                 else
                     shaderData.shaderString = m_Graph.GetPreviewShader(node, out mode);

MaterialGraphProject/Assets/UnityShaderEditor/Editor/Drawing/Views/GraphEditorView.cs

                         FloatShaderProperty outputIdProperty;
                         if (copyFromNode is MasterNode)
                         {
-                            var shader = ((MasterNode)copyFromNode).GetShader(GenerationMode.ForReals, out textureInfo);
+                            var shader = ((MasterNode)copyFromNode).GetShader(GenerationMode.ForReals, copyFromNode.name, out textureInfo);
                             GUIUtility.systemCopyBuffer = shader;
                         }
                         else