# App Migration implementation not working when disabling feature flag \`com.atlassian.jira.migration.app-migration.feature\`

**URL:** <https://community.developer.atlassian.com/t/app-migration-implementation-not-working-when-disabling-feature-flag-com-atlassian-jira-migration-app-migration-feature/48744>\
**Category:** Cloud Migrations\
**Tags:** cloud-migrations, jira-plugin, app-migration, jira-server\
**Created:** [June 9, 2021, 8:09am UTC](https://community.developer.atlassian.com/t/app-migration-implementation-not-working-when-disabling-feature-flag-com-atlassian-jira-migration-app-migration-feature/48744 "2021-06-09T08:09:34Z")\
**Posts on this page:** 3\
**Page:** 1

<div class="post-metadata">

**Author:** ![fadli.abdulrahman](https://sea1.discourse-cdn.com/atlassiandeveloper/user_avatar/community.developer.atlassian.com/fadli.abdulrahman/32/37755_2.png) [@fadli.abdulrahman](https://community.developer.atlassian.com/u/fadli.abdulrahman)\
**Post date:** [June 9, 2021, 8:09am UTC](https://community.developer.atlassian.com/t/app-migration-implementation-not-working-when-disabling-feature-flag-com-atlassian-jira-migration-app-migration-feature/48744/1 "2021-06-09T08:09:34Z")

</div>

**Summary**

- JCMA app version `1.5.6`
- Jira Server version `8.16.1`
- atlassian-app-cloud-migration-tracker version `1.26`

`onStartAppMigration` stop working when disabling feature flag `com.atlassian.jira.migration.app-migration.feature` in Jira Server.

I’m implementing `CloudMigrationListenerV1` interface in my code which was working before.

![Screenshot 2021-06-09 at 3.49.38 PM](https://global.discourse-cdn.com/atlassiandeveloper/original/3X/9/0/90ee5842d48af2346e2e8dcfafa0c7de5a25577f.png)

**Logs**

- With `com.atlassian.jira.migration.app-migration.feature` feature flag

- Without `com.atlassian.jira.migration.app-migration.feature` feature flag

**Workaround**  
Enabling feature flag `com.atlassian.jira.migration.app-migration.feature` in Jira Server.

---

<div class="post-metadata">

**Author:** ![jrichards](https://sea1.discourse-cdn.com/atlassiandeveloper/user_avatar/community.developer.atlassian.com/jrichards/32/39455_2.png) [@jrichards](https://community.developer.atlassian.com/u/jrichards)\
**Post date:** [June 10, 2021, 12:53am UTC](https://community.developer.atlassian.com/t/app-migration-implementation-not-working-when-disabling-feature-flag-com-atlassian-jira-migration-app-migration-feature/48744/2 "2021-06-10T00:53:11Z")

</div>

Hi @fadli.abdulrahman,

> [@fadli.abdulrahman](#):
>
> `onStartAppMigration` stop working when disabling feature flag `com.atlassian.jira.migration.app-migration.feature` in Jira Server.

In short, this is expected behaviour.

App Migration in both CCMA and JCMA is in EAP and so App Migration isn’t available to the general public. As such we’re using the dark feature to allow you to test and for a limited number of customers to help us test during EAP.

You can review the documentation about the dark feature here

- [How automated migration works | App migration platform](https://developer.atlassian.com/platform/app-migration/getting-started/#prerequisite)

Hope this helps.

Regards,  
James.

---

<div class="post-metadata">

**Author:** ![fadli.abdulrahman](https://sea1.discourse-cdn.com/atlassiandeveloper/user_avatar/community.developer.atlassian.com/fadli.abdulrahman/32/37755_2.png) [@fadli.abdulrahman](https://community.developer.atlassian.com/u/fadli.abdulrahman)\
**Post date:** [June 10, 2021, 3:03am UTC](https://community.developer.atlassian.com/t/app-migration-implementation-not-working-when-disabling-feature-flag-com-atlassian-jira-migration-app-migration-feature/48744/3 "2021-06-10T03:03:27Z")

</div>

Hi @jrichards ,

Thanks for the clarification. Appreciated you helps.

Regards,  
Fadli