n situations where you'd like to split an order into multiple orders (for fulfillment purposes, generally), please follow the steps outlined below:
Navigate to the Selling » Client Orders page.
Find the order you'd like to split, and click on your client's name.
On the order details screen, click the Split Into Multiple Orders button that's found below the list of ordered items.
When prompted, place a checkmark in the boxes found in the Split? column next to any of the items you'd like to move to a new order.
Click the Split the Order button at the bottom of the page.
Once the order has been split, the new order containing the split items will be listed in the Selling » Client Orders page.
Note: The original order will keep the cumulative order totals, and the new order's total will be displayed as $0.00.