Villager curing system is wrong (old worlds)

1. summon some villagers in a 1.14
2. trade with them until they max out.
3. swich to the newsest beta
4. cure one villager after turning him into a zombie villager.

you will see that not only the cured, but all the villagers have the "1 emerald" discounds.

only the cured villager should have the discounds.