Is Special Order PO workflow correct?

I’ve just raised a Special Order PO by clicking the respective line item Special Order hyperlink on a Pending Fulfilment Sales Order. If you do it this way, it creates a PO for all the items on the Sales Order, not just the line clicked, and disregards the Location dropdown in the created PO, setting the delivery address to the standard fixed company address and not that as set in the Location record.

However, if you set the Create PO dropdown in the Sales Order line item to Special Order, while the Sales Order is Pending Approval, then save and Approve, the result is what I’d expect: the created PO only shows the line item selected as Special Order and the delivery address is set to the Preferred Location default in the Item Record.