u/Kunigunda2

So, me and my brother are trying to make a Digital Circus server for the two of us, so we downloaded a map (which was originally for bedrock, but we converted it into java). A few details were missing so we tried to build some rooms and details, but after we logged out and came back, a bunch of random chunks were missing. (This didnt happened everytime we logged into the server, just sometimes.) So we inserted the map again (and lost all of our work) and made a backup this time but now when we logged in again (after building some rooms) a LOT of chunks are gone as well. Buildings missing, the walls are missing... I tried to use the backup, but it seems like it used autosave because it didnt do anything... Does anyone has any idea why does it deletes random chunks and buildings from our world or did anyone had a similiar experience?