Hello, I have wondered if that is possible to create new world with predefined ids as I wanted to copy some structures which I have on the other jeid world, but when I do that they look strange and blocks aren't the ones they should be. Changing ids by nbtexplorer seems to fix that issue, however it makes world unplayable, because everything what was already rendered has different ids, so it looks awful. Is there a way to do what I want?

Mod looks dead. Dev hasn't released anything for a few months. Not worth asking anything.

Dev hasn't released anything for a few months.

So? You really think that means it's dead? Probably just working on something big.

Mod looks dead. Dev hasn't released anything for a few months. Not worth asking anything.

Please stop.
While development may have temporarily stopped, don't discourage users from asking for help.

Okay, so I kindof solved the problem by deleting the regions of the world. However now I have ids in registry which are from mods that aren't on that world, but maybe it will not cause any troubles.