How to Prevent Partial Allocation Across Multiple WMS Orders(Same Sales Order)

Summary:

We have a requirement to prevent partial allocation for Sales Orders. We will either ship all or none.
The Order Type has the partial allocation flag unchecked however the way orders are created in WMS based off the standard prebuilt integration between Inventory cloud and WMS cloud lead to sales orders getting partially allocated. The integration creates one WMS order for each shipment line which causes issues operationally. Since the Sales Order is split across multiple orders in WMS how can we ensure the partial allocation rule is applied collectively across the wms orders (same sales order)? 

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