Enterprise Vault is capable of honoring or ignoring folders that are assigned as Exchange Managed Folders. When setting the Mailbox Advanced policy setting "Archive Exchange Managed Folders" to Normal (Treat as any other folder), this setting is not currently recognized for the function of VV.
Due to this, interaction with Managed Folders items cannot be moved to the Virtual Vaultin and return the following error:
You cannot modify the contents of a managed folder
This issue is resolved in the following release:
Enterprise Vault 9.0.2 - Release Details
Enterprise Vault 10.0 - Release Details