Issue Description

Serial numbers change when a Sales Invoice is converted directly into a Delivery Note.

Correct Workflow (Best Practice)

1. Create a Sales Order
2. Create a Delivery Note from the Sales Order
3. Select Serial Numbers in the Delivery Note
4. Submit the Delivery Note
5. Create the Sales Invoice from the Delivery Note

Important Rules

1. Do NOT select serial numbers in Sales Invoice
2. Always select serial numbers in the Delivery Note