The new missions are to kill minions and bosses from the first 3 provinces in season 2. In my case, the Stegosaurus was partially retroactive and displays 5 kills. I dont know how many I actually killed but it should be at least 18. As there are 9 stages with the stegosaurus and I’ve defeated it on both normal and hard.
Meanwhile it also counted zero kills on Undead Privateer.
Others have reported theirs were fully retroactive with the missions already partially/mostly completed. Any way this can be fixed?