When ever I try to convert my villagers into zombie villagers and cure them the villager will just die although I have the villagers and the zombie named. The villagers have been traded with, the villagers are named, the villagers aren't in minecarts or boats or beds when they are killed. The zombie is named, fully equipped with diamond armor and a diamond sword, the zombie is also not in a minecart, boat or bed. I've tried converting the villagers to zombie villagers in a creative test world when I was testing only about 3 out of 10 villagers would be converted.