We have a customer who is experiencing difficulties loading orphan data related to the sales tables. According to the current design, the connector's sales tables use the system ID as the primary key, which prevents orphan records from being loaded to the destination. However, upon consulting with the source team, the customer was advised to use the 'No' column as the primary key to overcome this issue. Could you kindly review this request and implement the necessary changes so that the connector supports loading orphan records?