I am having the exact same issue on several websites using Hikashop. This is the expectation during checkout:
When the customer edits the shipping address and selects the "OK" button, the default view should be the Billing address on the left and the updated Shipping address on the right.
Instead, this is the only setting I can find:
When the customer edits the shipping address and selects the "OK" button, they are presented with two options for the Billing address and two options for the Shipping address.
Even though the correct Shipping address is selected, my Client does not want to see two Shipping addresses when the customer edits the Shipping address. If they are adding a new address, seeing two addresses is OK. But, not when they are editing the address. Am I incorrect or am I missing something.