minor change

src/Infrastructure/BotSharp.Abstraction/Conversations/Models/StateKeyValue.cs

@@ -21,9 +21,12 @@ public class StateKeyValue
 public class StateValue
 {
     public string Data { get; set; }
+
     [JsonPropertyName("message_id")]
     public string MessageId { get; set; }
+
     public bool Active { get; set; }
+
     [JsonPropertyName("update_time")]
     public DateTime UpdateTime { get; set; }
 

src/Infrastructure/BotSharp.Core/Conversations/Services/ConversationStateService.cs

@@ -145,8 +145,13 @@ public class ConversationStateService : IConversationStateService, IDisposable
             var lastValue = value.Values.LastOrDefault();
             if (lastValue == null || !lastValue.Active) continue;
 
-            lastValue.Active = false;
-            lastValue.UpdateTime = utcNow;
+            value.Values.Add(new StateValue
+            {
+                Data = lastValue.Data,
+                MessageId = lastValue.MessageId,
+                Active = false,
+                UpdateTime = utcNow
+            });
         }
     }