Board Thread:LotR Mod Technical Support/@comment-29253515-20190910131347/@comment-29253515-20190915173138

HubToo wrote: BraveSold!3r wrote: Check Region Scanner. Also how does it work. it is not a mod i see. Indeed, it is a standalone Java program that you run from your operating system and not from Minecraft (the scale of the changes it can handle would crash any Minecraft server running WorldEdit).

In your case, assuming A is the directory of your old world (the one where you want to change IDs), and B is the directory of the new one, you would just have to do something like:

cd A/DIM100/region

java -jar RegionScanner-1.03.jar --from A/level.dat --to B/level.dat --output old *.mca

Then you would either copy some of the resulting region files in B/DIM100/region, or copy B's level.dat file in A and make some schematics. Sorry for the late reply, but for some reason i cant open the program it only opens in winrar. sorry i may be a bit of a digibeet