Issue Summary

This is reproducible on Data Center: (yes)

Steps to Reproduce

1. In Jira Software, install the plugin JCMA 1.11.7 (the latest version at this moment) and try to migrate using the option Migrate all data at once (MAO). 

Expected Results

• Complete the migration successfully.

Actual Results

1. The migration plan is stuck on the Jira server with the status of in progress.
2. The migration appears to have been completed successfully on the Atlassian side; however, it was completed in less than one minute, and projects are not transferred (status of ready).
3. Even rate limiting is disabled the migration assistant keeps throwing the error statusCode=429
4. The below exception is thrown in the atlassian-jira.log or atlassian-jira-migration.log files:

   • ./atlassian-jira.log JCMA-MigrationTracker-pool-4-thread-26 ERROR      [c.a.j.migration.httpclient.ServiceUnavailableBackoffRetryStrategy] Request failed with executionCount=2, maxRetries=5, statusCode=429, xFailureCategory=null 
     
     ./atlassian-jira-migration.log ERROR admin 1034x339x1 xns4rs 172.29.239.250,172.50.0.2 /migration-cloud-save-action.jspa [jira.migration.httpclient.ServiceUnavailableBackoffRetryStrategy] Request failed with executionCount=1, maxRetries=5, statusCode=429, xFailureCategory=null 

Workaround

1. Downgrade the JCMA version. In the test it was downgraded to the JCMA 1.10.17 version and the migration was successfully completed using the method Migrate all data at once (MAO).
   • How to install a specific version of the Jira Cloud Migration Assistant