diff --git a/packages/core/EventManager.ts b/packages/core/EventManager.ts
index 845db40562..29e4cae4c3 100644
--- a/packages/core/EventManager.ts
+++ b/packages/core/EventManager.ts
@@ -439,12 +439,9 @@ export default class EventManager {
         });
       }
 
-      if (newBooking) {
-        calendarReference = newBooking.references.find((reference) => reference.type.includes("_calendar"));
-      } else {
-        // Bookings should only have one calendar reference
-        calendarReference = booking.references.find((reference) => reference.type.includes("_calendar"));
-      }
+      calendarReference = newBooking?.references.length
+        ? newBooking.references.find((reference) => reference.type.includes("_calendar"))
+        : booking.references.find((reference) => reference.type.includes("_calendar"));
 
       if (!calendarReference) {
         return [];
diff --git a/packages/features/bookings/lib/handleNewBooking.ts b/packages/features/bookings/lib/handleNewBooking.ts
index 4f6beb8a77..68f8ffab76 100644
--- a/packages/features/bookings/lib/handleNewBooking.ts
+++ b/packages/features/bookings/lib/handleNewBooking.ts
@@ -1655,7 +1655,7 @@ async function handler(
 
     // Use EventManager to conditionally use all needed integrations.
 
-    const updateManager = await eventManager.reschedule(evt, originalRescheduledBooking.uid, booking?.id);
+    const updateManager = await eventManager.reschedule(evt, originalRescheduledBooking.uid);
     // This gets overridden when updating the event - to check if notes have been hidden or not. We just reset this back
     // to the default description when we are sending the emails.
     evt.description = eventType.description;