Converting worlds question.

  • Please make sure you are posting in the correct place. Server ads go here and modpack bugs go here
  • The FTB Forum is now read-only, and is here as an archive. To participate in our community discussions, please join our Discord! https://ftb.team/discord

Batmun

New Member
Jul 29, 2019
11
0
0
I have a huge base on FTB: Ultimate, however I'd like to move mod-packs to Tech World 2.
I know this is going to be a pain but does anyone have any idea how I can go about doing it?
 
I have a huge base on FTB: Ultimate, however I'd like to move mod-packs to Tech World 2.
I know this is going to be a pain but does anyone have any idea how I can go about doing it?
you could do it with just careing the buildings made out of vinilla stuf but all the moded stuff isnt coming over
 
  • Like
Reactions: Wagon153
You don't. Many mods were changed, removed, and added between Ultimate and Tech World 2.
 
This is not easy but is possible:

Midas has been converted to 1.7.10
For the mods that are common to both packs this will let you preserve their blocks.
You would also want to use the "ungenerate" feature of World Regeneration Manager to remove the worldgen of any mods you cannot convert with midas to avoid honeycombing your terrain with small dark pockets that will capture all your mob spawns leaving the surface somewhat "peaceful"

If this involves a change in minecraft versions you will need to create a bridging modpack with consists of all the new mod pack mods, but the versions that applied to the existing minecraft version.

1. ungenerate all mods you are going to remove.
2. load and test the world and see that that content has been erased properly.
3. use midas to convert from the old pack on your old mc version to the bridging pack.
4. replace the existing mod pack with the bridging modpack.
5. load and test the world and see that the old mods are gone, the new ones are avialable, and the preserved ones are still in place.
6. remove the bridging modpack and replace it with the final modpack. upgrade the minecraft version.
7. load and test the world to see that the mods have converted their old mc content, to new mc content properly.

--
In step 6 - when placing in the final modpack you might be tempted to overwrite the config with the new config. While midas has given you a strong chance at preserving blocks in the world, blind overwriting has a chance to go catastrophically wrong if other types of ids are different between the modpacks: namely biome and dimension ids - these MUST be set in the new config to the old values if different, which could cause problems if your goal is to convert the world such that it can use the new modpack without config changes.
 
Last edited:
Okay - would it help if I said the only blocks I had placed in the Ultimate world were also blocks in Tech World 2?
 
Okay - would it help if I said the only blocks I had placed in the Ultimate world were also blocks in Tech World 2?

Lol, no. Its probably not worth the effort. best case scenario, you will have a world full of holes where blocks that dont exist anymore used to be. I cant believe you are still using an ultimate world anyway, thats ancient history. Whats wrong with you?
 
Okay - would it help if I said the only blocks I had placed in the Ultimate world were also blocks in Tech World 2?
Don't even waste your time trying....

In the time you will end up spending trying to just bring over 0.1% of your world, you could have manually rebuild it 10 times in much better ways...

And if you bring parts of it over, you will have MASSIVE repair work around the edges of the stuff. Or if you bring over the entire landscape you will have missing ores, landscape features/populators, disjointed landscape/biomes, missing spawns and god knows what other complications...