---
title: "Campaign Studio - January 23, 2024"
date: "2025-09-12T05:57:24+00:00"
summary: "Campaign Studio update: PHP 8 upgrade, landing page alias improvements, and fixes for segment, API, and import issues."
image:
type: "announcement"
url: "/campaign-studio/release/2024-01-23/81251-campaign-studio-january-23-2024"
id: "9bf0d8b5-05d0-4208-9d36-9ed4699fdabf"
---

**Type**

**Related ticket**

**Release note**

Change

MAUT-11084

The landing page alias supports underscore.

Change

MAUT-8990

Campaign Studio is upgraded to use PHP 8.

Fix

MAUT-11037

The Campaign Studio user interface incorrectly displayed the **Contact added to segment** event for contacts that were already in a segment.

Fix

MAUT-10983

The `PATCH` API in custom items incorrectly updated fields that are not part of the request payload.

Fix

MAUT-10924

If the **Require Proof Key for Code Exchange (PKCE) Extension for Supported Authorization Flows** checkbox was selected when configuring the Campaign Studio app in Salesforce, the system displayed authorization errors in Campaign Studio.

Fix

MAUT-10790

Contacts in a segment were missing from the associated campaign.

Fix

MAUT-10678

CSV imports were saving incorrect values for select field types.

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