Proxify non-proxy fields.
This tool will keep values on fields if they are not empty value and different from the target field.
If you don't want this behaviour, check the Delegate values checkbox below and all values will be delegated to the proxy target.
If you want to keep empty values('' or () or [] or 0) after proxify, check the Keep empty values checkbox below and all empty values will not be delegated. (Delegate values option is high priority.)