It would be good if the function of merging orders were implemented in a future version.
For example: a customer makes a purchase and on the same day makes another purchase.
If it were possible to merge the orders, when merging the orders the products would only be placed in one order and abantecart would recalculate the shipping costs.
I thought of this idea because when this happens on my site, I usually do it manually, I'm not going to charge my customers for 2 shipments, so I copy the products from the second purchase to the first and then I have to delete the second order.