They had years of organization using IT that built up a lot of inertia. As another commenter said, 10 days is probably well below the threshold of their typica

They had years of organization using IT that built up a lot of inertia. As another commenter said, 10 days is probably well below the threshold of their typical shipment turnover. My guess is they'd quickly suffer potentially company-ending losses if they were to stop using modern IT altogether.