You can request shipment of all your stored orders at any time before the storage expiration date by going to the menu:
My Account > My Stored Orders > Trigger Shipping.
You will then receive an email informing you that your stored orders are ready to be shipped. A link will then allow you to choose the delivery method you want for all your stored orders (to your postal address with or without an appointment, or in a parcel relay).
Once your delivery method is validated, you will be able to group your orders again. This one will be independent from your first grouping of orders.