Default Behavior Default Behavior If you use the default class (Ens.Archive.ManagerOpens in a new tab), InterSystems IRIS does the following for each message to be archived: Copies the message header to the target namespace. Copies the serialized message body (not the message body object) to the target namespace. Deletes the message header and message body objects from the original namespace. Note: Messages cannot be restored once archived to another namespace.