It happened because you applied for both tags at the same time. The way around that is to apply for your shotgun tags online then when they post on the that you have gotten your tags then send in for your muzzleloader tags in the second lottery there are usually plenty of muzzleloader tags left over from the first lottery and them you will have both sets of tags. I have been doing this for the last 4 years and have gotten 2 shotgun and 2 muzzleloader tags every year.