[MC-29492] Structures are not recognized by the game after updating

If you have a map created in 1.6.2, and had a witch hut there, when migrating to the snapshot, witches will not spawn anymore on the hut, instead, normal monsters will spawn

What I expected to happen:

A witch to spawn in a witch hut generated in minecraft 1.6.2

What actually happened:

Witches did not spawn, normal monsters spawned.

Steps to reproduce:

Find a witch hut in version 1.6.2
See how they spawn
Update to the snapshot 13w36a
No witch will spawn, instead, normal monsters will.

Linked issues

duplicates 1

MC-15547 Structures (witch huts, nether fortresses etc.) don't get saved with the world file Resolved

Comments 3

Th3F4114n0n3 2013-09-05T16:32:17Z

Unfortunately this happens when changes are made to the World Generation Engine.

Tails 2013-09-05T19:00:12Z

Duplicate of MC-15547, please use the search function to see if your bug has already been submitted. Currently over 57% of tickets are being resolved as duplicate.

Tails 2013-09-05T21:32:25Z

Please do not mark unreleased versions as affected. You do not have access to this yet.