Tracking info on customer Order Details page

When a customer orders from us and we log into the admin panel to mark it "shipped" and put in the tracking number Eshop emails the customer.

However, if the customer does not get that email due to numerous possible issues, then they call us which wastes our time and the customers time.

Can someone please tell me why something as basic as having the tracking number and link we submitted into the admin for that order, does not also update the "Order Details" page the customer can log in and see on the customer side?

I would think any shopping cart, at least all the ones ive used would have tracking info in the order details when i log in as a customer.

Am i missing something? Do i have a configuration variable wrong?

Or does Eshop just not perform this basic function?