Feature Request: Improved Credit Note/Unstock handling

The purchase credit note/unstock needs improving. There are some of these requested features on old Dear Systems community that go back many years.

• Cannot make a standalone credit note and unstock. Stand alone credit notes do not have access to “unstock”. If you are migrating from another system, you won't be able to create a credit note easily as you don't have a purchase order to issue a credit note against.
• Credit notes/unstock can only be 1:1 with purchase orders and you cannot have a credit note/unstock link to multiple purchases.
• A credit note is required to complete the unstock. Most of the time you will return the stock to the supplier, then they will issue a credit note once the return has been approved. Having the unstock require a credit note makes no sense and is the reverse of the usual workflow.