In a realm villagers taken from a villager breeder to get converted for cheap trades do not get the cheap trades once cured they charge normal rates like normal villages even though they have been cured. The solution I have found is unless I convert them again to zombies and back to villagers (repeat the whole process)in which case they do give the trades but this requires double the potions and doubt the golden apples.
Thank you for your report!
We're actually already tracking this issue at MCPE-86308, so I will resolve and link this ticket as a duplicate.
If you would like to add a vote and any extra information to the main ticket it would be appreciated.
If you haven't already, you might like to make use of the search feature to see if the issue has already been mentioned.
Quick Links:
📓 Issue Guidelines – 💬 Community Support – 📧 Customer Support – ✍️ Feedback and Suggestions – 📖 Game Wiki