diff --git a/lambdas/account-scoped/src/channelCapture/channelCaptureHandlers.ts b/lambdas/account-scoped/src/channelCapture/channelCaptureHandlers.ts
index e3dc42a9ef..e10f9ac05e 100644
--- a/lambdas/account-scoped/src/channelCapture/channelCaptureHandlers.ts
+++ b/lambdas/account-scoped/src/channelCapture/channelCaptureHandlers.ts
@@ -39,6 +39,7 @@ export type CapturedChannelAttributes = {
   environment: string;
   helplineCode: string;
   botLanguage: string;
+  botLanguageV1: string;
   botSuffix: string;
   controlTaskSid: string;
   releaseType: ReleaseTypes;
@@ -96,6 +97,7 @@ const updateChannelWithCapture = async (
     environment,
     helplineCode,
     botLanguage,
+    botLanguageV1,
     botSuffix,
     controlTaskSid,
     chatbotCallbackWebhookSid,
@@ -127,6 +129,7 @@ const updateChannelWithCapture = async (
         environment,
         helplineCode,
         botLanguage,
+        botLanguageV1,
         botSuffix,
         controlTaskSid,
         chatbotCallbackWebhookSid,
@@ -152,6 +155,7 @@ type CaptureChannelOptions = {
   environment: string;
   helplineCode: string;
   botLanguage: string;
+  botLanguageV1: string;
   botSuffix: string;
   inputText: string;
   userId: string;
@@ -186,6 +190,7 @@ const triggerWithUserMessage = async (
     helplineCode,
     botSuffix,
     botLanguage,
+    botLanguageV1,
     inputText,
     controlTaskSid,
     releaseType,
@@ -202,6 +207,7 @@ const triggerWithUserMessage = async (
     enableLexV2,
     postTextParams: {
       botLanguage,
+      botLanguageV1,
       botSuffix,
       environment,
       helplineCode,
@@ -233,6 +239,7 @@ const triggerWithUserMessage = async (
     environment,
     helplineCode,
     botLanguage,
+    botLanguageV1,
     botSuffix,
     controlTaskSid,
     releaseType,
@@ -296,6 +303,7 @@ const triggerWithNextMessage = async (
     environment,
     helplineCode,
     botLanguage,
+    botLanguageV1,
     botSuffix,
     inputText,
     controlTaskSid,
@@ -344,6 +352,7 @@ const triggerWithNextMessage = async (
     environment,
     helplineCode,
     botLanguage,
+    botLanguageV1,
     botSuffix,
     controlTaskSid,
     releaseType,
@@ -572,6 +581,7 @@ export const handleChannelCapture = async (
       helplineCode: helplineCode.toLowerCase(),
       botSuffix,
       botLanguage: languageSanitized.toLowerCase(),
+      botLanguageV1: languageSanitized,
       releaseType,
       studioFlowSid,
       memoryAttribute,
diff --git a/lambdas/account-scoped/src/channelCapture/chatbotCallback.ts b/lambdas/account-scoped/src/channelCapture/chatbotCallback.ts
index 46d6fb6a4f..e907cf8734 100644
--- a/lambdas/account-scoped/src/channelCapture/chatbotCallback.ts
+++ b/lambdas/account-scoped/src/channelCapture/chatbotCallback.ts
@@ -121,13 +121,21 @@ export const handleChatbotCallback: AccountScopedHandler = async (
       const capturedChannelAttributes =
         channelAttributes.capturedChannelAttributes as CapturedChannelAttributes;
 
-      const { botLanguage, botSuffix, enableLexV2, environment, helplineCode, userId } =
-        capturedChannelAttributes;
+      const {
+        botLanguage,
+        botLanguageV1,
+        botSuffix,
+        enableLexV2,
+        environment,
+        helplineCode,
+        userId,
+      } = capturedChannelAttributes;
 
       const lexResult = await LexClient.postText({
         enableLexV2,
         postTextParams: {
           botLanguage,
+          botLanguageV1,
           botSuffix,
           environment,
           helplineCode,
diff --git a/lambdas/account-scoped/src/channelCapture/chatbotCallbackCleanup.ts b/lambdas/account-scoped/src/channelCapture/chatbotCallbackCleanup.ts
index 8bd5a1206f..6b42a83588 100644
--- a/lambdas/account-scoped/src/channelCapture/chatbotCallbackCleanup.ts
+++ b/lambdas/account-scoped/src/channelCapture/chatbotCallbackCleanup.ts
@@ -102,8 +102,15 @@ export const chatbotCallbackCleanup = async ({
     }
   };
 
-  const { botLanguage, botSuffix, enableLexV2, environment, helplineCode, userId } =
-    capturedChannelAttributes;
+  const {
+    botLanguage,
+    botLanguageV1,
+    botSuffix,
+    enableLexV2,
+    environment,
+    helplineCode,
+    userId,
+  } = capturedChannelAttributes;
 
   const shouldDeleteSession =
     botLanguage && botSuffix && environment && helplineCode && userId;
@@ -112,12 +119,15 @@ export const chatbotCallbackCleanup = async ({
     // Delete Lex session. This is not really needed as the session will expire, but that depends on the config of Lex.
     shouldDeleteSession &&
       LexClient.deleteSession({
-        botLanguage,
-        botSuffix,
         enableLexV2,
-        environment,
-        helplineCode,
-        sessionId: userId,
+        deleteSessionParams: {
+          botLanguage,
+          botLanguageV1,
+          botSuffix,
+          environment,
+          helplineCode,
+          sessionId: userId,
+        },
       }),
     // Update channel attributes (remove channelCapturedByBot and add memory)
     updateChannelOrConversationAttributes(releasedChannelAttributes),
diff --git a/lambdas/account-scoped/src/channelCapture/lexClient.ts b/lambdas/account-scoped/src/channelCapture/lexClient.ts
index 7c6de21f72..2d8bb965f5 100644
--- a/lambdas/account-scoped/src/channelCapture/lexClient.ts
+++ b/lambdas/account-scoped/src/channelCapture/lexClient.ts
@@ -34,7 +34,6 @@ export type LexMemory = { [q: string]: string | number };
 type PostTextParams = {
   environment: string;
   helplineCode: string;
-  botLanguage: string;
   botSuffix: string;
   sessionId: string;
   inputText: string;
@@ -42,7 +41,6 @@ type PostTextParams = {
 type DeleteSessionParams = {
   environment: string;
   helplineCode: string;
-  botLanguage: string;
   botSuffix: string;
   sessionId: string;
 };
@@ -63,13 +61,13 @@ const getBotNameV1 = ({
 });
 
 const postTextV1 = async ({
-  botLanguage,
+  botLanguageV1: botLanguage,
   botSuffix,
   environment,
   helplineCode,
   inputText,
   sessionId,
-}: PostTextParams) => {
+}: PostTextParams & { botLanguageV1: string }) => {
   try {
     const { botAlias, botName } = getBotNameV1({
       botLanguage,
@@ -102,12 +100,12 @@ const isEndOfDialogV1 = (dialogState: string | undefined) =>
   dialogState === 'Fulfilled' || dialogState === 'Failed';
 
 const deleteSessionV1 = async ({
-  botLanguage,
+  botLanguageV1: botLanguage,
   botSuffix,
   environment,
   helplineCode,
   sessionId,
-}: DeleteSessionParams) => {
+}: DeleteSessionParams & { botLanguageV1: string }) => {
   try {
     const { botAlias, botName } = getBotNameV1({
       botLanguage,
@@ -193,7 +191,7 @@ const postTextV2 = async ({
   helplineCode,
   inputText,
   sessionId,
-}: PostTextParams) => {
+}: PostTextParams & { botLanguage: string }) => {
   try {
     const result = await getBotNameV2({
       botLanguage,
@@ -237,7 +235,7 @@ const deleteSessionV2 = async ({
   environment,
   helplineCode,
   sessionId,
-}: DeleteSessionParams) => {
+}: DeleteSessionParams & { botLanguage: string }) => {
   try {
     const result = await getBotNameV2({
       botLanguage,
@@ -302,7 +300,7 @@ const postText = async ({
   postTextParams,
 }: {
   enableLexV2: boolean;
-  postTextParams: PostTextParams;
+  postTextParams: PostTextParams & { botLanguage: string; botLanguageV1: string };
 }) => {
   try {
     if (enableLexV2) {
@@ -321,38 +319,21 @@ const postText = async ({
 };
 
 const deleteSession = async ({
-  botLanguage,
-  botSuffix,
   enableLexV2,
-  environment,
-  helplineCode,
-  sessionId,
+  deleteSessionParams,
 }: {
   enableLexV2: boolean;
-  environment: string;
-  helplineCode: string;
-  botLanguage: string;
-  botSuffix: string;
-  sessionId: string;
+  deleteSessionParams: DeleteSessionParams & {
+    botLanguage: string;
+    botLanguageV1: string;
+  };
 }) => {
   try {
     if (enableLexV2) {
-      return await LexV2.deleteSession({
-        botLanguage,
-        botSuffix,
-        environment,
-        helplineCode,
-        sessionId,
-      });
+      return await LexV2.deleteSession(deleteSessionParams);
     }
 
-    return await LexV1.deleteSession({
-      botLanguage,
-      botSuffix,
-      environment,
-      helplineCode,
-      sessionId,
-    });
+    return await LexV1.deleteSession(deleteSessionParams);
   } catch (error) {
     return newErr({
       message: error instanceof Error ? error.message : String(error),