(This is a bug for all of bedrock but i used my main bedrock device as example) Idk where to put it but its sort of a bug. Anyway villagers in minecraft bedrock are very broken. They will randomly lose and regain their professions messing up villager trading halls. It is sad to see java edition's villagers workig properly while the bedrock editions villagers seem to have had no effort put into them. Unless you fix these issues, you might aswell revoke village and pillage from bedrock as the villager system was much more reliable than the newly added one. Why not just make mcpe villagers work the same as in java it makes everything easier and there was no point adding good villagers to one and bad ones to the other.