# Bulk Change

> The Bulk Change tool lets you apply new Content Types, Metadata Sets, or Data Definitions to multiple assets at one time.

URL: https://www.hannonhill.com/cascadecms/latest/articles/design-in-cascade/bulk-change/index.html
category: Design in Cascade
article-type: concept
content-kind: article
release-availability: all
tags: design
updated: 2026-10-06

> **Before you begin:**
>
> Bulk Change can cause data loss if fields don't match between old and new assignments. Always test on a small number of assets first.

The Bulk Change tool lets you reassign a **Content Type**, **Metadata Set**, or **Data Definition** across multiple assets in a Folder at once.

1. 1    Open Bulk Change   Navigate to any [Folder](https://www.hannonhill.com/cascadecms/latest/articles/content-authoring/folders/index.html) and click **More > Bulk Change**. You can also right-click the Folder and select it from the context menu.
1. 2    Choose a property to change   From the **Property to change** dropdown, select **Content Type**, **Metadata Set**, or **Data Definition**.
1. 3    Configure the new assignment   For **Content Type** or **Data Definition**, select the new value to apply. For **Metadata Set**, you'll also choose which asset types to target (Folders, Files, Blocks, and/or Links).
1. 4    Set the scope   Optionally check **Include all descendants of the folder** to apply the change to assets in sub-Folders. Without this, only the Folder's direct children are eligible.
1. 5    Select assets and submit   Review the table of eligible assets, check the ones you want to change, and click **Submit**.

**Content Type & Data Definition** — For best results, make sure fields in the new assignment match the existing one. Mismatched fields can result in lost content.

**Metadata Set** — Double-check that the new set includes any fields your templates or workflows depend on.