We arrived in Tromso and had to leave the plane again. This time people flying on domestically had to get their bags from the carousel and then recheck-in for the onward flight to Oslo as Svalbard was a tax-free area and people had to declare any duty-free products on arrival in Norway. We had to leave the arrivals area and walk around to the departures hall and reboard the plane after verifying that our bags went straight through to Copenhagen as we would clear customs in Denmark.