Why can't I edit an order with local delivery as the shipping method?

Hi there!
Also adding to this, it’d be great to be able to edit local delivery orders. Customers often change their mind on what they’d like delivered + we sell products that are by itself a collection of multiple other products. We’d like to add these ‘sub-products’ to the original local delivery order, in order for this to be correctly taken out of our inventory.

Cheers!