diff --git a/packages/features/ee/round-robin/handleRescheduleEventManager.ts b/packages/features/ee/round-robin/handleRescheduleEventManager.ts
index 4675954b2fa481..01b666bb740228 100644
--- a/packages/features/ee/round-robin/handleRescheduleEventManager.ts
+++ b/packages/features/ee/round-robin/handleRescheduleEventManager.ts
@@ -161,8 +161,8 @@ export const handleRescheduleEventManager = async ({
     const calendarResult = results.find((result) => result.type.includes("_calendar"));
 
     evt.iCalUID = Array.isArray(calendarResult?.updatedEvent)
-      ? calendarResult?.updatedEvent[0]?.iCalUID
-      : calendarResult?.updatedEvent?.iCalUID || undefined;
+      ? calendarResult?.updatedEvent[0]?.iCalUID || bookingICalUID
+      : calendarResult?.updatedEvent?.iCalUID || bookingICalUID || undefined;
   }
 
   const newReferencesToCreate = structuredClone(updateManager.referencesToCreate);
diff --git a/packages/features/ee/round-robin/roundRobinManualReassignment.ts b/packages/features/ee/round-robin/roundRobinManualReassignment.ts
index b9ac0962de9b81..a1fee3d96069c9 100644
--- a/packages/features/ee/round-robin/roundRobinManualReassignment.ts
+++ b/packages/features/ee/round-robin/roundRobinManualReassignment.ts
@@ -290,6 +290,7 @@ export const roundRobinManualReassignment = async ({
     },
     attendees: attendeeList,
     uid: booking.uid,
+    iCalUID: booking.iCalUID,
     destinationCalendar,
     team: {
       members: teamMembers,
diff --git a/packages/features/ee/round-robin/roundRobinReassignment.ts b/packages/features/ee/round-robin/roundRobinReassignment.ts
index 476a466fd64675..265ad5be1da605 100644
--- a/packages/features/ee/round-robin/roundRobinReassignment.ts
+++ b/packages/features/ee/round-robin/roundRobinReassignment.ts
@@ -320,6 +320,7 @@ export const roundRobinReassignment = async ({
     description: eventType.description,
     attendees: attendeeList,
     uid: booking.uid,
+    iCalUID: booking.iCalUID,
     destinationCalendar,
     team: {
       members: teamMembers,