KB47480: "Cannot save, move or copy this Hierarchy object 'System Hierarchy' with ID 'xxx' because it has been changed in the Metadata" error message is received when trying to save changes to attributes in MicroStrategy 9.4.x-10.x

SYMPTOM:
After making changes to an attribute, user receives the following error message when trying to save and close the attribute editor in Strategy 9.4.x-10.x.

Cannot save, move or copy this Hierarchy object 'System Hierarchy' with ID 'xxx' because it has been changed in the Metadata.

1. Go to Administration > Projects > Purge Element Caches, Purge Object Caches, Purge Report Caches
2. Restart the Intelligence Server