diff --git a/EduNetworkBuilder/NetworkCard.cs b/EduNetworkBuilder/NetworkCard.cs
index e175f43..1d7d5d5 100644
--- a/EduNetworkBuilder/NetworkCard.cs
+++ b/EduNetworkBuilder/NetworkCard.cs
@@ -924,6 +924,14 @@ namespace EduNetworkBuilder
             }
         }
 
+        public void UpdateAllNicsVLANInfoAfterClone()
+        {
+            foreach (NetworkInterface nf in interfaces)
+            {
+                nf.UpdateVLANsAfterClone();
+            }
+        }
+
         public void LockUsOutOfCard()
         {
             foreach (NetworkInterface nf in interfaces)
diff --git a/EduNetworkBuilder/NetworkDevice.cs b/EduNetworkBuilder/NetworkDevice.cs
index 97b304c..c57ff56 100644
--- a/EduNetworkBuilder/NetworkDevice.cs
+++ b/EduNetworkBuilder/NetworkDevice.cs
@@ -1535,6 +1535,7 @@ namespace EduNetworkBuilder
             NICs.Clear();
             foreach(NetworkCard nic in ndCopyFrom.NICs)
             {
+                nic.UpdateAllNicsVLANInfoAfterClone();
                 NICs.Add(NetworkCard.Clone(nic));
             }
 
diff --git a/EduNetworkBuilder/NetworkInterface.cs b/EduNetworkBuilder/NetworkInterface.cs
index d40dd55..2b715ee 100644
--- a/EduNetworkBuilder/NetworkInterface.cs
+++ b/EduNetworkBuilder/NetworkInterface.cs
@@ -69,14 +69,40 @@ namespace EduNetworkBuilder
             }
         }
 
+        /// <summary>
+        /// When we are doing replays and we load in a network interface using reflection,
+        /// it can create a duplicate VLAN tag (1,untagged).  Rebuilding these fixes that.
+        /// </summary>
+        public void UpdateVLANsAfterClone()
+        {
+            List<VLANInfo> tmpVLANs = new List<VLANInfo>();
+            tmpVLANs.AddRange(VLANs);
+            VLANs.Clear();
+            foreach(VLANInfo VLI in tmpVLANs)
+            {
+                bool found = false;
+                foreach(VLANInfo VLI2 in VLANs)
+                {
+                    if(VLI2.ID == VLI.ID)
+                    {
+                        VLI2.Tag = VLI.Tag;
+                        found = true;
+                    }
+                }
+                if (!found)
+                    VLANs.Add(VLI);
+            }
+        }
+
         public VLANInfo GetVLANInfo(int id)
         {
+            VLANInfo status = null;
             foreach(VLANInfo one in VLANs)
             {
                 if (one.ID == id)
-                    return one;
+                    status = one;
             }
-            return null;
+            return status;
         }
 
         public bool Equals(NetworkInterface CompareWith)