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Backstory

The places that have been built on in my world aren't that big. It's a ~100x~100 square, a ~150x~50 rectangle in the Nether, and another ~100x~100 square accessed by portals.

The world is currently unplayable due to the server console spending so much time printing errors that the players time out. That, and for some reason it decided to spawn hundreds of sheep.

So I was wondering, is it was possible, and if so how, to move sections of this world into another, new, world?

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I may be wrong, but MAYBE the biome information is not saved together with the chunks. I read about that here: getsatisfaction.com/mojang/topics/… (but that info might be outdated, I don't know). — Well, I asked about this: gaming.stackexchange.com/questions/27634/… –  Denilson Sá Aug 10 '11 at 21:29
    
@Denilson I am fairly certain that biomes are saved separate from the chunks because I have had biomes changed. –  John the Green Aug 10 '11 at 21:36
    
Pasting into a different map will almost certainly result in a biome mismatch. This may mean your desert in your old map is now tundra, and while the terrain will stay the same, it may snow... –  fredley Aug 10 '11 at 21:39
    
@John I have the same problem with my minecraft world! It's not running as a server, only at home on my local PC and my favorite and giant world is not accessible anymore. One time I managed to move my character with an lvl editor and I saw hundreds of cows. It would be a pity if I had to give up this world. Did you manage to save your world with fredley's proposal? –  Exa Aug 11 '11 at 10:25
    
@Exa I didn't try. Knowing that the biomes would never be the same, I decided to just start a new map. In your case however, if you have the original seed (I can help you get the current seed, but if it has changed you will still have a biome mismatch), then you can create a world with that seed and copy your other world in. That will guarantee a biome match because both worlds were generated from the same seed. I don't have my original seed, so that wouldn't have worked for me. –  John the Green Aug 11 '11 at 14:25

1 Answer 1

up vote 12 down vote accepted

Yes. Use MCEdit. You can copy the section in your old map, and save it as a schematic, which you can then import and place into a new world (generated with Minecraft by starting a new game), overwriting what was there before. Make sure Minecraft is closed while you are using MCEdit, otherwise you can corrupt your map.

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Do you have to copy the saved chuncks into another existing world, or can you save the selectioned chuncks of your old world, that you want to keep, and generate a new "world" around it? What I mean: Cutting a part of the old map out, keep this, and delete the rest, so that there will generate new/unused biomes around it? Greets and thank. :) –  TrudleR Jul 19 at 9:05

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