[Modpack Problem]: New Biome Bundle world generated that replaced my previous one

[BANANALOVAH]

• What version of University: 1.2.1
• Describe the issue:
  I logged into FTB University for the first time today and when the world loaded in, a new Biome Bundle world generated in place of the old. This meant that my base was gone. As far as I can tell, only the Biome Bundle world which I logged out in last night was affected. The other dimensions are fine.

I couldn't replicate the glitch. I tried logging out in the overworld, relaunching University, and the overworld was the same. I repeated the same while in the Biome Bundle world, and it didn't re-generate another world.

Proof of the issue

Thank you very much for your time!

[BANANALOVAH]

Update: I restored my world from a backup and the dimension was fine. I played for awhile, and then I logged off in the overworld. However, when I rebooted again just down and went in the portal, the same new world that replaced my dimension before replaced the dimension again.


I have literally no idea what could be happening here. The only consistency between them I can notice is that a long time passed between logout and login, because if I try to repeat the issue by restoring a backup it doesn't occur.