---
title: Migrate legacy targeted rollout
slug: feature-experimentation/docs/migrate-legacy-targeted-rollout
docTags: 
createdAt: 2026-08-05T20:40:02.000Z
---

- Optimizely Feature Experimentation
- Optimizely Full Stack (Legacy)

This topic maps each corresponding UI element for a a targeted rollout in [legacy Optimizely Full Stack Experimentation](docId:6_ik6SSz-WyJLWuCQw7BT) to a targeted delivery rule in [Optimizely Feature Experimentation](docId\:eH-UMm_rOn_GdGDGLV6__). See [Feature Experimentation application migration](docId\:bykQnE4aGRkC5WXhU6Yi5).

1. The legacy rollout rule's **audience** becomes the targeted delivery rule's **name** and **audience** in Feature Experimentation. Because there is no corresponding name for a rule in Full Stack, Feature Experimentation creates a name based on the audience.
2. The legacy rollout rule's **traffic allocation percentage** becomes the targeted delivery's **traffic allocation percentage**
3. The **Rollout traffic** setting at 0% becomes the **Off** variation in Feature Experimentation.
4. The feature test tied to the feature **f2\_test** becomes an A/B test rule attached to the flag
5. The feature test tied to the feature **f2\_test\_2** becomes an A/B test rule attached to the flag

- Legacy Optimizely Full Stack Experimentation

  ![targeted-delivery-shorter.png](https://api.archbee.com/api/optimize/BrbvVORKJ5iIeSMZye5kI/yZ8lZ7EoSNf6iar0PqAqj-20260720-145841.png)

  ![experiment-useage.png](https://api.archbee.com/api/optimize/BrbvVORKJ5iIeSMZye5kI/3i5hmd8ZcMPdEDoKodKGB-20260720-145840.png)
- Optimizely Feature Experimentation

  ![feature-experimentation-shorter.png](https://api.archbee.com/api/optimize/BrbvVORKJ5iIeSMZye5kI/h5coT1_5ucGOf7D1DDjGs-20260720-145840.png)