Updating my server from 1.14.2 to 1.14.3 made villagers that previously had discounts, converting them from zombie villagers back to villagers, made them "forget" who saved them and all discounts are nonexistent. 

Villagers saved or traded with frequently (having a good reputation) in 1.14.3 however, will have the discounted prices until you log out on the server. Once you log out all the prices change to default prices so when you log in, they are all back to the starting price before discounts.