Editing An Order Through Admin Panel Increasing Quantity Doesnt Reflect On Accounting


I noticed an issue in my multi vendor.

I tried editing an order through admin panel and increasing the quantity of a product in the order but it didn't reflect in the accounting. It just adds an recordin the accounting system, change to order number #123 but with 0 value. When i try decreasing the quantity, the accounting record works well by deducting the amount since quantity was decreased.

Any idea?