Used /locate to find an igloo, upon discovery that said igloo had a hidden basement which contained the updated skins for zombie villagers but the legacy skins for the village. The village was a nitwit but had the wrong coat even associated to it as well. When using the given items to cure the zombie villager, after some time, the zombie villager had not be turned back to normal. As per understanding, an natural spawning villagers should be updated to 1: the new skins and 2: be the correct profession for that skin and any zombie villagers should be cured. There was however, a village near  by with the correct version of the skins.