---
title: "Campaign Studio - November 16, 2021"
date: "2025-09-12T05:57:24+00:00"
summary: "Campaign Studio update: Improved CDP scaling, fixed sync issues, enhanced plugin validation, and resolved email stats display."
image:
type: "announcement"
url: "/campaign-studio/release/2021-11-16/79011-campaign-studio-november-16-2021"
id: "97c13c9f-fb95-42c2-ae8c-2614528e52ff"
---

*   Change Scale improvements are made to the CDP connector to support higher volumes of email event data.
    
*   Fix Duplicate contacts were created when attempting to sync the same person across multiple integration objects.
    
*   Fix Users were able to publish plugins without proper validation of the values in the API key fields unless the integration was authorized previously.
    
*   Fix Incorrect data appeared when the week time unit was used on email stats charts.
    
*   Fix Emails created using the legacy email builder opened in the legacy email builder instead of the code mode.