I have a world on XBox Minecraft where I have one of every librarian villager.  Earlier in the world, I had a Thorns III villager and a Mending villager.  I made the every librarian villager system more recently.  Today, I logged onto my world to find my original Mending villager missing.  Also, my new (the old one died) Thorns III villager was gone too.  Since they were the only duplicate villagers and they both disappeared, I fell there may be correlation.  Please fix this because I don’t want to have to get a new Thorns III villager.