When a sales invoice is corrected or canceled, the sales order it originates from is ‘reopened’.

But if that sales invoice is for more than one sales order (shipment) combined, ALL sales orders will be reopened, and you would have to post ALL these sales orders again as shipped. That might not be what a user wants.

I believe it would be an improvement if sales orders would also be reopened when posting a corrective credit memo: as long as the sales order (line) is completely credited (qty. and amount). And sales order (lines) that are not included in the corrective credit memo will not be reopened.

The way the sales order is reopened, also seems not logical:

The sales shipment still shows the quantity being invoiced, and does not show it being credited.

Instead, in the sales order the 'qty. to ship' and 'qty. to invoice' fields are filled. That means that after posting the sales order again as shipped, there are now 2 shipments. Wouldn't it be better to 'reopen' the original sales shipment?

(I believe this is also mentioned in another idea, but then related to the purchase order, purchase receipt & purchase invoice)