A major feature has been added to On Demand Recovery for Azure Active Directory which integreates the service with Recovery Manager for Active Directory on premise. This is a hybrid restore feature which allows the admin to restore the object in both on premise and cloud simulataniously. For more information on how to configure this integration, please Click Here.
If the hybrid feature has not been configured and the restored object is synced to Azure Active Directory then On Demand Recovery for Azure Active Directory will not be able to restore the cloud attributes. The only workaround is to temporarily disable DirSync after the object has synced to the cloud and prior to the On Demand restore.