Defaulting Transaction Quantity for components split with Lots in Review Dispatch list

We need to have the 'Required quantity' updated as remaining quantity for components in Review Dispatch list for below case.

Work Order with 10 Qty of Finished Good with only 1 Lot controlled component with 100 Qty.

4 Quantity is already completed in Work Order.

To complete the remaining 6 Quantity, we went to 'Review Dispatch list' → Backflush Materials.

The remaining Quantity for the component is showing in the screen (Here 60) as expected.

Since the component is Lot controlled, we are adding multiple entries for the same component (with different lots).

Here we are reducing the Transaction Quantity on Original line (from 60 to 25) and adding a new line.