I need to find out where in Prestashop 1.7 the condition can be changed if the customer does not fill in the delivery address to fill in the same as the billing address.
This change must be valid in a one step order.
Currently, Prestashop has the other way around, using the same billing address as the shipping address.
All I need is advice on which file to change and on which line.
I don't want any codes.