Automated migration of app data to Cloud is only supported for Workflow Enhancer for Jira Data Center versions since 7.1.0 (Data Center 10.3).
We now support fully automated migration of Workflow Enhancer for Jira from Data Center Version 10.3.0 to Cloud via the Jira Cloud Migration Assistant. You can also follow our Complete Migration walkthrough complete with screenshots. In case of problems, please check our Migration Troubleshooting page
For versions of Workflow Enhancer for Jira prior to 7.1.0, we also provide a semi-automated legacy migration tool.