diff --git a/build/AssemblyInfo.cs b/build/AssemblyInfo.cs
index 20cc7067..0e37c45d 100644
--- a/build/AssemblyInfo.cs
+++ b/build/AssemblyInfo.cs
@@ -1,6 +1,6 @@
 using System.Reflection;
 
-[assembly: AssemblyVersion("6.0.8")]
-[assembly: AssemblyFileVersion("6.0.8")]
+[assembly: AssemblyVersion("6.0.9")]
+[assembly: AssemblyFileVersion("6.0.9")]
 [assembly: AssemblyCompany("TrakHound Inc.")]
 [assembly: AssemblyCopyright("Copyright (c) 2023 TrakHound Inc., All Rights Reserved.")]
diff --git a/libraries/MTConnect.NET-Common/Devices/Device.cs b/libraries/MTConnect.NET-Common/Devices/Device.cs
index 912dc4dc..82a73eeb 100644
--- a/libraries/MTConnect.NET-Common/Devices/Device.cs
+++ b/libraries/MTConnect.NET-Common/Devices/Device.cs
@@ -609,7 +609,7 @@ public static Device Process(IDevice device, Version mtconnectVersion)
                     if (mtconnectVersion >= MTConnectVersions.Version13) obj.References = device.References;
                     if (mtconnectVersion >= MTConnectVersions.Version17) obj.Configuration = device.Configuration;
                     if (mtconnectVersion >= MTConnectVersions.Version18) obj.CoordinateSystemIdRef = device.CoordinateSystemIdRef;
-                    obj.MTConnectVersion = device.MTConnectVersion != null ? device.MTConnectVersion : mtconnectVersion;
+                    if (mtconnectVersion >= MTConnectVersions.Version17) obj.MTConnectVersion = device.MTConnectVersion != null ? device.MTConnectVersion : mtconnectVersion;
                     if (mtconnectVersion >= MTConnectVersions.Version22) obj.Hash = device.Hash;
 
                     // Add DataItems
diff --git a/libraries/MTConnect.NET-JSON-cppagent/Devices/JsonDevice.cs b/libraries/MTConnect.NET-JSON-cppagent/Devices/JsonDevice.cs
index b616a0e3..338eaf5a 100644
--- a/libraries/MTConnect.NET-JSON-cppagent/Devices/JsonDevice.cs
+++ b/libraries/MTConnect.NET-JSON-cppagent/Devices/JsonDevice.cs
@@ -17,8 +17,8 @@ public class JsonDevice
         [JsonPropertyName("uuid")]
         public string Uuid { get; set; }
 
-        [JsonPropertyName("instanceId")]
-        public long InstanceId { get; set; }
+        [JsonPropertyName("hash")]
+        public string Hash { get; set; }
 
         [JsonPropertyName("iso841Class")]
         public string Iso841Class { get; set; }
@@ -67,7 +67,7 @@ public JsonDevice(IDevice device)
                 Name = device.Name;
                 NativeName = device.NativeName;
                 Uuid = device.Uuid;
-                InstanceId = device.InstanceId;
+                Hash = device.Hash;
                 if (device.SampleRate > 0) SampleRate = device.SampleRate;
                 if (device.SampleInterval > 0) SampleInterval = device.SampleInterval;
                 Iso841Class = device.Iso841Class;
@@ -113,7 +113,7 @@ public Device ToDevice()
             device.Name = Name;
             device.NativeName = NativeName;
             device.Uuid = Uuid;
-            device.InstanceId = InstanceId;
+            device.Hash = Hash;
             device.SampleRate = SampleRate.HasValue ? SampleRate.Value : 0;
             device.SampleInterval = SampleInterval.HasValue ? SampleInterval.Value : 0;
             device.Iso841Class = Iso841Class;
diff --git a/libraries/MTConnect.NET-JSON/Devices/JsonDevice.cs b/libraries/MTConnect.NET-JSON/Devices/JsonDevice.cs
index 4e21db9f..48fab58a 100644
--- a/libraries/MTConnect.NET-JSON/Devices/JsonDevice.cs
+++ b/libraries/MTConnect.NET-JSON/Devices/JsonDevice.cs
@@ -23,8 +23,8 @@ public class JsonDevice
         [JsonPropertyName("uuid")]
         public string Uuid { get; set; }
 
-        [JsonPropertyName("instanceId")]
-        public long InstanceId { get; set; }
+        [JsonPropertyName("hash")]
+        public string Hash { get; set; }
 
         [JsonPropertyName("iso841Class")]
         public string Iso841Class { get; set; }
@@ -74,7 +74,7 @@ public JsonDevice(IDevice device)
                 Name = device.Name;
                 NativeName = device.NativeName;
                 Uuid = device.Uuid;
-                InstanceId = device.InstanceId;
+                Hash = device.Hash;
                 if (device.SampleRate > 0) SampleRate = device.SampleRate;
                 if (device.SampleInterval > 0) SampleInterval = device.SampleInterval;
                 Iso841Class = device.Iso841Class;
@@ -137,7 +137,7 @@ public Device ToDevice()
             device.Name = Name;
             device.NativeName = NativeName;
             device.Uuid = Uuid;
-            device.InstanceId = InstanceId;
+            device.Hash = Hash;
             device.SampleRate = SampleRate.HasValue ? SampleRate.Value : 0;
             device.SampleInterval = SampleInterval.HasValue ? SampleInterval.Value : 0;
             device.Iso841Class = Iso841Class;
diff --git a/libraries/MTConnect.NET-XML/Devices/XmlDevice.cs b/libraries/MTConnect.NET-XML/Devices/XmlDevice.cs
index d7c27f6e..0968a919 100644
--- a/libraries/MTConnect.NET-XML/Devices/XmlDevice.cs
+++ b/libraries/MTConnect.NET-XML/Devices/XmlDevice.cs
@@ -85,7 +85,7 @@ protected IDevice ToDevice(Device device)
             device.SampleInterval = SampleInterval;
             device.Iso841Class = Iso841Class;
             device.CoordinateSystemIdRef = CoordinateSystemIdRef;
-            device.Hash = device.Hash;
+            device.Hash = Hash;
             if (Version.TryParse(MTConnectVersion, out var mtconnectVersion))
             {
                 device.MTConnectVersion = mtconnectVersion;
@@ -236,7 +236,7 @@ public static void WriteXml(XmlWriter writer, IDevice device, bool outputComment
                 if (device.SampleRate > 0) writer.WriteAttributeString("sampleRate", device.SampleRate.ToString());
                 if (!string.IsNullOrEmpty(device.CoordinateSystemIdRef)) writer.WriteAttributeString("coordinateSystemIdRef", device.CoordinateSystemIdRef);
                 if (device.MTConnectVersion != null) writer.WriteAttributeString("mtconnectVersion", device.MTConnectVersion.ToString());
-                if (device.MTConnectVersion != null && device.MTConnectVersion >= MTConnectVersions.Version22) writer.WriteAttributeString("hash", device.Hash);
+                if (!string.IsNullOrEmpty(device.Hash)) writer.WriteAttributeString("hash", device.Hash);
 
 				// Write Description
 				XmlDescription.WriteXml(writer, device.Description);