---
title: "Campaign Studio - May 13, 2021"
date: "2025-09-12T05:57:24+00:00"
summary: "Campaign Studio update: Improved performance, enhanced UI warnings, and fixed data import and form rendering issues."
image:
type: "announcement"
url: "/campaign-studio/release/2021-05-13/79081-campaign-studio-may-13-2021"
id: "ea838fdb-5edf-492d-80eb-8a103988ccd7"
---

*   Change The contact list page in segments has enhanced page loading time.
    
*   Change The segment build speed has improved for large contact counts.
    
*   Change The campaign details page has enhanced performance.
    
*   Change The Campaign Studio user interface displays a warning message when you try to unpublish a segment that is used in a campaign or segment filter.
    
*   Fix The bounce rate winner criteria on landing pages was incorrect.
    
*   Fix Data import through CSV had an issue.
    
*   Fix Form results using email templates with Japanese font were not rendered correctly.
    
*   Fix Customers were unable to edit the existing landing page redirects.