From 301376e33b905cb1b8513c025ed49d461063317c Mon Sep 17 00:00:00 2001
From: Anik Dhabal Babu <81948346+anikdhabal@users.noreply.github.com>
Date: Tue, 25 Nov 2025 17:16:35 +0530
Subject: [PATCH] fix: set new icalUid when host reassign (#25365)

* fix seated event and workflow issue

* update

* revert

* Update smsReminderNumber assignment in handleSeats
---
 .../ee/round-robin/handleRescheduleEventManager.ts | 14 +++++++++++---
 1 file changed, 11 insertions(+), 3 deletions(-)

diff --git a/packages/features/ee/round-robin/handleRescheduleEventManager.ts b/packages/features/ee/round-robin/handleRescheduleEventManager.ts
index 166b1b05ac..d8974cca14 100644
--- a/packages/features/ee/round-robin/handleRescheduleEventManager.ts
+++ b/packages/features/ee/round-robin/handleRescheduleEventManager.ts
@@ -13,6 +13,7 @@ import { prisma } from "@calcom/prisma";
 import type { DestinationCalendar } from "@calcom/prisma/client";
 import type { Prisma } from "@calcom/prisma/client";
 import type { CalendarEvent, AdditionalInformation } from "@calcom/types/Calendar";
+import getICalUID from "@calcom/emails/lib/getICalUID";
 
 type InitParams = {
   user: {
@@ -163,9 +164,16 @@ export const handleRescheduleEventManager = async ({
 
     const calendarResult = results.find((result) => result.type.includes("_calendar"));
 
-    evt.iCalUID = Array.isArray(calendarResult?.updatedEvent)
-      ? calendarResult?.updatedEvent[0]?.iCalUID || bookingICalUID
-      : calendarResult?.updatedEvent?.iCalUID || bookingICalUID || undefined;
+    if (changedOrganizer) {
+      const providerICalUID = evt.iCalUID = Array.isArray(calendarResult?.createdEvent)
+        ? calendarResult?.createdEvent[0]?.iCalUID
+        : calendarResult?.createdEvent?.iCalUID;
+      evt.iCalUID = providerICalUID || getICalUID({});
+    } else {
+      evt.iCalUID = Array.isArray(calendarResult?.updatedEvent)
+        ? calendarResult?.updatedEvent[0]?.iCalUID || bookingICalUID
+        : calendarResult?.updatedEvent?.iCalUID || bookingICalUID || undefined;
+    }
   }
 
   const newReferencesToCreate = structuredClone(updateManager.referencesToCreate);