Combining Order Releases with Same Source / Dest Pairs

Hi,

Has anyone had problems combining order releases onto shipments where the order releases have the same source / destination pairs, same dates, compatible weights, etc.?

The problem we are having is that when similar orders are in a bulk plan of 200, they are not combining into LTL shipments. When we take a subset of orders (say 5 for example) all with compatible dates/weights/source/dest. etc., and run a bulk plan, they will all plan as expected into a single LTL shipment.

We are using the same planning parameters, itineraries and everything. I cannot figure out why when the orders are planned along with 200 other orders, they are not combining into one shipment, but when they are planned is a small group, they do plan into one shipment as expected.

Any help is appreciated.

Thanks