Fumigation is a risk with second hand goods. New items in boxes are rarely fumigated unless the boxes themselves are on wood pellets that do not meet AQIS standards. I've had containers with pellets that meet AQIS standards and specified it on the DOP. It went straight through. I don't think a container of NIB would ever be subject to fumigation unless the paperwork was missing. But it would be inspected, not fumigated - unless the inspection found timber, straw or bamboo. Not one of my imports has ever required fumigation. Customs don't randomly pick out containers for fumigation purposes. If the paperwork is not completed, they may let you go - depending on a number of factors. "Country of origin" is another reason that affects fumigation.
After everything that has happened so far, I am not expecting the paperwork to be in order