MC Version: 1.21.1
Modpack: ATM10 2.42
Mod Version: 1.21.1-2.4.21
Reproducible: Unsure
After a Server Restart the Reactor looses all State and contents. It is. 21x21x40, it is build on a Chunk Border cause yk too big for a single Chunk. The Issue does not occur with smaller reactors not crossing chunk borders. Have no access to the server world can't check if it occurs in SP. All Chunks the reactor is in, are loaded via ftbUtil (I think it's called now). The debug.log of the server start seems to be void of anything related to an error in the world loading or Extremereactors.

Hi. Could you please post here the full coordinates of the 8 corner blocks of your Reactor?
Thx
Z

Sorry for the wait

-1291, 51, -554; -1291, 91, -554
-1270, 91, -554; -1270, 51, -554
-1270, 51, -533; -1270, 91, -533
-1291, 91, -533; -1291, 51, -533

Can confirm the issue does not occur in Atm10 2.44