After Pick Release is completed, how to move back and items from the Staging Area back to its Orgina

Hello Gurus,

I think it should be an easy question.

Let say I completed the Sales Order Pick Release for a Qty of 10. The Inventory moved from the subinventory location 201 to the Staging Subinventory 202.

Now I performed a Ship Confirm on only a quantity of 8.

Could you please tell me how I can move back the quantity of 2 that did not ship to its original location 201?

I know how to unassign a Delivery, but what are the steps to unpick and move back from Staging Area 202 back to location 201 the quantity of 2?

Let me know if you can provide any help.