I'm currently playing the Liberation campaign in HOMM3. You're supposed to get one artifact in each mission that carries over to the next mission. I got the Badge of Courage in the 1st mission, the Charm of Mana in the 2nd, the Pendant of Life in the 3rd, but when I start the 4th and final mission I'm left without any carryover items and I can't claim my "great reward". Is this a bug or am I just doing something wrong?