Using dev-mode in Confluence Cloud Migration Assistant breaks progress of app migration

Issue Summary

When running an app migration in the Confluence Cloud Migration Assistant with dev-mode on

• https://developer.atlassian.com/platform/app-migration/testing/dev-mode/

the progress status is not updated.

Steps to Reproduce

1. Go to <base-url>/admin/darkfeatures.action and configure both

• • migration-assistant.app-migration.dev-mode
  • migration-assistant.app-migration.feature

1. Run an app-migration
2. Send status from cloud using the /progress endpoint

Expected Results

The app migration status is updated with the correct status and message.

Actual Results

The app migration stays on READY status and does not change

Workaround

1. Select your app in App Assessment
2. Do not use dev-mode if you need to use progress.