Production order with distribution key GLEI is not displayed correct after change of order qty

Hello experts,

in ECC 6.0, one person a script wherever the organisation cardinal GLEI is starring to a antithetic output successful MD04 arsenic desired, delight spot beneath the illustration scenario:

initial Result successful MD04:

So far, truthful good.

Now, 5 days of accumulation are already implicit and we person a delivered qty of 10.000 pcs.  On Sept. 08, 2025, the readying section is changing the full qty of accumulation order, from 20.000 to  caller worth 22.000 pieces, since they privation to adhd 1 further accumulation time and the extremity day should beryllium Sept. 15, 2025.

With the alteration of the full qty, SAP is changing the basal commencement day arsenic well. Initially, the worth was Sept. 01, 2025, but since the Start Date is not allowed to beryllium successful the past, the caller basal commencement day is present changed to Sept. 08, 2025.

We would inactive expect to spot for each time from Sept. 08 until Sept. 15 a distributed regular qty of 2000 pcs. But successful reality, SAP is providing an output successful MD04 which is not reflecting our reality:

Example SAP output aft the change:

So yes, SAP is realizing we person 12.000 pcs remaining which should beryllium produced. But the organisation with GLEI is not moving decently aft the commencement day was changed to existent date. In my opinion, SAP checks the magnitude of days from Start to End Date and calculates the implicit Order Qty (22.000) divided by days. Then, it is "deleting" the quantities which are already delivered (thats wherefore we don´t spot immoderate GR connected Sept. 08, 09, and Sept 10). Instead, it should see the remaining bid qty (target qty - delivered qty = 12000 pcs) and administer past with GLEI for the remaining 6 days. 

Do you guys person immoderate thought however we could forestall this to happen? Any solution to assistance america getting a amended representation successful MD04?