The app catworkx Migration for Jira synchronizes issues from a Jira Server instance to Jira Cloud. So it is the central tool if you want to migrate from Jira Server to Jira Cloud.
The following items can be synchronized:
- Workflow (Status)
- Epic Link
- Due Date
- Customfield (single-/multiline Textfields)
- Issue Links
- Fix Versions
- Affected Versions
Furthermore, Migration for Jira can create versions and components during the synchonization process.