It would be great if we could retrieve information from the MOVED_ISSUE_KEY database table, through a REST API interface.

Workaround:

• Retrieve current and previous project keys via REST API
• Retrieve previously moved issues and their current issue keys:

  select moved_issue_key.old_issue_key, project.pkey, jiraissue.issuenum from moved_issue_key, project, jiraissue where project.id = jiraissue.project and jiraissue.id = moved_issue_key.issue_id