Why is my Intercompany Sales Order being unlinked from Intercompany Purchase Order when being closed?

AI generated answer (using internal Slack threads):

The unlinking of an Intercompany Sales Order (SO) from an Intercompany Purchase Order (PO) when being closed could be due to the inherent behavior of NetSuite. When a line item in a Sales Order is closed, it breaks the link with the corresponding Purchase Order. This is because closing a line item in a Sales Order signifies that no further processing is required for that item, and hence, it is no longer necessary to maintain the link with the Purchase Order. However, it's important to note that this behavior might not always be desirable, especially in cases where you want to maintain a historical link between the Sales Order and Purchase Order for tracking or auditing purposes. Unfortunately, there is no out-of-the-box way to prevent this unlinking behavior in NetSuite. In terms of scripting, it seems that creating and linking Intercompany Sales Orders and Purchase Orders is not directly supported. This is based on the consensus from various NetSuite professionals and experts. ****** Disclaimer: This response was generated by an artificial intelligence assistant based on previous conversations from multiple Slack channels, and may contain inaccuracies or mistakes. ******