Incorrect prices when adding discounted products to order

I couldn't find this after a quick search of the forums, but here goes. I apologize if this has been covered before.

When you have a ready made order from someone, and are viewing "products":
You (the admin) add 5 items of a certain product that is discounted if you buy 5 or more items. The product gets added but without the 5 discount.

Scenario:
You (admin) want to add 5 items of "Item A" to a customers order.
"Item A" costs $5.80 if you buy just one, but $4.70 if you buy at least 5.

You go to the admin, find the order, click the "products" tab of that order, find "Item A" in the add products field and type 5 for Qty. 5 of "Item A" gets added to the order, but at the full $5.80 price. (Should be $4.70)
If you add 5 of "Item A" to the shopping cart as a customer would, using the customer frontend then you get the correct, $4.70 price.

This is NOT a bug but the current Order Edit has it's limits, this is one of them.

1.5.0 should fix all these problems.