Upgrade RSS Feed Integration to Optimizely CMS 13 – v3.0.0 Beta

Posted on Saturday, February 21, 2026

I’ve upgraded my RSS Feed Integration library for Optimizely CMS to support Optimizely CMS 13.

Version 3.0.0 is currently released as a beta to allow early testing with the CMS 13 preview. This version will become stable once CMS 13 reaches its final release.

If you're planning your CMS 12 → 13 migration, this release allows you to validate RSS behavior ahead of time.

Breaking Changes in 3.0.0

There are two important changes to be aware of.

Scheduled Job Must Be Re-Executed

After upgrading, you must re-launch the scheduled job once in order to regenerate the RSS feed.

Why?

The compiled XML feed files will now be stored in a different location (see below). The plugin will not automatically detect the old files.

A single execution of the scheduled job resolves the issue.

SiteDefinition → Application (CMS 13 Architecture Change)

Under Optimizely CMS, the transition from SiteDefinition to Application removes the Id property.

In previous versions:

  • The SiteDefinition.Id was used to determine where compiled RSS XML files were stored.

In CMS 13:

  • Application no longer exposes an Id.
  • The save path must now rely on the normalized application name instead.

Impact

Because of this change:

  • The storage path of compiled RSS XML files changes.
  • Existing RSS files generated under CMS 12 will not be found.
  • The scheduled job must be executed once to regenerate them in the new location.

Migration Summary

If you are upgrading:

  1. Update to version 3.0.0-beta
  2. Deploy your CMS 13 preview environment
  3. Run the RSS scheduled job once
  4. Validate your feed output

That’s it. If you are preparing your CMS 13 migration roadmap, this beta gives you a safe way to validate RSS generation ahead of the official release.

Optimizely
C# NuGet