This article is for Cloud.

Your server to cloud migration using the Jira Cloud Migration Assistant (JCMA) has got stuck at a percentage or cannot complete.

Steps

Contacting Support

If you are unable to update Tempo/Jira to compatible versions, you will need to perform the migration manually https://help.tempo.io/cloud/en/tempo-server-migration-guide/server-data-center-to-cloud-manual-migration-guide.html