Restore Caveats
Restoring data from previous snapshot on same instance: if Jira data (test case, version, project, component etc.) changed since the snapshot is taken, this is likely to create orphaned references.
Restoring data from previous snapshot from a another Jira Server instance: this data can’t be restored.
Restoring data from a another Jira OnDemand instance: this functionality is not supported.
Restoring data from previous snapshot with imported project: because imported Jira data has different identifiers, restore process will result in bad or orphan references.
Restoring Test Cycle and Execution Details for tests issues when moved between projects: this functionality is not supported.