5. Creating and Managing vApps : 5.4 vApp Deployment Readiness : 5.4.7 Relocate Existing vApps : 5.4.7.4. Risks
   
5.4.7.4. Risks
Configuration changes at the vSphere layer do not propagate to vCloud Director. The following risks are associated with migrating vApps and virtual machines at the vSphere layer without vCloud Director involvement.
*If the virtual machine is migrated to datastores that are not assigned to the appropriate virtual datacenter management, anomalies might occur.
*If the resource pool assignment of the virtual machine is changed in the vSphere Client, abnormal behavior might result.
Changes made in vCloud Director are stored in the database. To mitigate the risks, use Representational State Transfer (REST) APIs with integrated fail-safes.