Logical partition configuration data is automatically maintained for the life of the physical system. Each logical partition load source contains the configuration data.
Only disaster recovery to a different physical system would require that you rebuild the configuration from the beginning. You should print your system configuration when you make changes to your logical partition configuration. This printout will help you as you rebuild the configuration.
During a save operation, the configuration data for the logical partition is not saved to the media volume. This allows data to be restored to a server even if it has logical partitions. However, you can work with the configuration data for logical partitions as needed for recovery purposes.