Villager Trades not restocking after renaming with a name tag

So I had created a villager trading hall and everything was running smoothly for a while and then I decided to name my villagers just in the odd chance they despawned while a zombie. Around this time, they stopped restocking. I killed all of my villagers and brought new ones in and renamed the first two. Neither of them restocked. I brought in a third one and did not rename it. That third villager has restocked several times. I parsed the web and found no results matching mine, and I assume it not to be intentional.