Hexxit Server World Lost?

[Sir Francis XLII]

Hey everyone. I'm not the host of the server, but everything that we had in the world is suddenly gone, including our characters. There was no reset or change to any of the data or files, so we have no idea what happened. The server just shut down normally last night, and when it relaunched today, we all spawned with no items in a completely different world.

I posted this in the Bug Report forum as well, but I feel as though I could also get answers for this here, possibly even faster, but still I apologize for the multipost.