Robert Amsbury

Many thanks for your response. I'll look again but think I looked there. I appreciate your disclaimer and will consider my actions carefully and take ownership for any consequences! 😊

I found my manifest.json but don't have an update_history.json.... I was hoping to manually edit one to see what happened. I presume it would be in the same folder? (Yup, I have system files visible 🙂 )

Tyler - I think that may be a different thing. Afaik only up to 5 conversions have a permanent effect but there are also temporary lesser effects that gradually wear off. These include stuff like levelling up the villager or curing other villagers.

I've now noticed this happening for tropical fish placed using buckets. They're in a closed glass tank so haven't gone anywhere.

I've never heard of Optifine causing name-tagged mobs to despawn and it is very widely used. It's certainly never happened to us before.

Edit: also Optifine being client-side, could it cause such an effect?

No axolotls! 🤣

How can you take a screenshot of something not being there? I'm experiencing a similar issue - 8 name-tagged axolotl in my squid farm all despawned.

I'm experiencing the same issues only since 1.17. The 'duplicate' tag is not appropriate as linked issue is a different circumstance. In this case trades are getting worse simply after conversion, not via any other mechanisms such as repeat trades or hurting villagers. I had a cleric offering an emerald for 12 rotten flesh: I converted them and the trade went up to 20.