Yes. Each pack you build (choose a pack type, then fill its meal slots) is added to the cart as its own line with a unique internal ID, so you can open Packs again and add a second, third, etc. pack — even a different pack type — to the same order without losing the ones already in the cart. In the cart sidebar, clicking anywhere on a pack's line reopens that pack's meal-picker pre-filled with its current selections so you can change it; a separate trash-can icon on that same line removes just that pack (there is no dedicated pencil icon — the whole row is clickable to edit). This is separate from Clear items, which empties the whole cart. This applies to Checkout As and POS orders that use the Packs module.