I fixed it replacing local delivery for Shipping. It’s no the best way and it requires a Taylor made work but it was resolved for me.
i installed one of the free “extreme checkout” which allows you to customize which shipping options you show depending on the postal code or state or country, then I create some shippings methods depending on the prices I want to charge, and finally you can edit any order which has “shipping” as a method and not Locla delivery.
so now I can let people choose delivery and allows me to edit the order 
I hope it helps, I know it’s very frustrating when you face this problem.