I don't believe this is what is happening, the sever has crashed once or twice since it was first setup and no rollback had happened to more than 5ish minutes, none of my configs have been changed and i just checked that the save interval is still 15 minutes, i think what's happening is the main world save gets updated only after a restart and my auto backups (which are also generated every 15 mins) are what is replacing it if a crash happens to occur, i have several servers and it's the same across all of them from what i can see.