For InterUnit transfers of partially picked Items from a Container, the Auto Putaway process creates

Note: I received this question via a SR and I’m posting in the community so others can benefit from the answer.

For a InterUnit transfer, when the quantity is partially picked for an item from a container, the item should deplete from the sending Business Unit and the container should remain with the item in the sending Business Unit.

The putaway was done in receiving Business Unit (since auto putaway is activated), but the container was also sent to the receiving Business Unit.

Why is this happening?