The save is not corrupted. I had no issue loading into it before upgrading the game to 19.4. When my system was running 19.3, and my server was running 19.3, everything loaded fine.
After overwriting the files via FTP transfer from 19.3 to 19.4, and fixing my client side issue, the game loaded me into a new game on my server. So there was clearly files from the old server that have been overwritten. Does every update mean that you have to start from scratch with this mod? Or can you explain to me which files from my old server I have to transfer back so that I can have all of my old servers progress back? I'm assuming that when I uploaded the new files, it replaced all of the data from my previous world. I am asking what files I would need from my 19.3 server so I can transfer them to my 19.4 server. Thank you.