diff --git a/packages/stage-ui/src/stores/chat.ts b/packages/stage-ui/src/stores/chat.ts
index c66b9cf99..863d01c58 100644
--- a/packages/stage-ui/src/stores/chat.ts
+++ b/packages/stage-ui/src/stores/chat.ts
@@ -246,15 +246,12 @@ export const useChatOrchestratorStore = defineStore('chat-orchestrator', () => {
       })
 
       let newMessages = sessionMessagesForSend.map((msg) => {
-        const { context: _context, id: _id, ...withoutContext } = msg
+        const { context: _context, id: _id, createdAt: _createdAt, ...withoutContext } = msg
         const rawMessage = toRaw(withoutContext)
 
         if (rawMessage.role === 'assistant') {
-          const { slices: _slices, tool_results, categorization: _categorization, ...rest } = rawMessage as ChatAssistantMessage
-          return {
-            ...toRaw(rest),
-            tool_results: toRaw(tool_results),
-          }
+          const { slices: _slices, tool_results: _toolResults, categorization: _categorization, ...rest } = rawMessage as ChatAssistantMessage
+          return toRaw(rest)
         }
 
         return rawMessage