Symptoms

The following appears when restoring an XML Backup made by a Cloud installation:

Cause

The XML backup from your OD (cloud) instance is only compatible with a special version of Confluence. Confluence Cloud is typically ahead of Confluence Server, which means you can't move your data from Confluence Cloud to a site installed from the standard Confluence Server download because backups taken from Confluence Cloud are only compatible with the current Cloud release (for example, 'Confluence 5.6-OD-39'). For more information, please see Migrate from Confluence Cloud to Data Center.

Workaround

1. Delete any previously failed, half-imported space

2. Run the following query in database:

   alter table
   CONTENT_PERM
   DISABLE constraint
   CP_UNIQUE_USER_GROUPS;

3. Import Space

4. Run the following query in database:

   alter table
   CONTENT_PERM
   ENABLE constraint
   CP_UNIQUE_USER_GROUPS;

   Please backup your database before running the above query.

Resolution

In order to restore the XML backup, use the special version of Confluence built for migrating from Crowd to Server. For more context on why this is required, refer to Migrate from Confluence Cloud to Data Center.