The current selection method in the voyage editor lines to select and Add staging list to shipping container is the 2 options:

• Select all
• Select lines 1 by 1

This means if you have PO or TO of 100 lines that has partial shipment/delivery, for 50 lines, the only way is to select all > unselect 50 lines (click 50 times)

Better approach would be a PO or TO line selection method where user can filter on in both forms on products and do a selection based on that filter.