I had just taken a backup of my world prior to messing with commands, and as I feared, I created a mess and needed to revert to my backup, but when I deleted the original and replaced it with the backup, my world has reverted itself as if I just loaded the seed for the first time! This just undid two months of work and joy my partner and I have shared together, and I don't know how to get it back! Am I completely hosed, or is there any solution? I've searched everywhere and can't really find anything. Can I mess with DB files or the manifest-###### file or level.dat or anything to get this thing to load back all that we've done? This is basically a game killer for us... it took me 5 months to convince my partner to even play MC, and now he's even more hooked than I am, and now that this has happened he'll probably never play again. I deeply hope someone can help! I'm pretty tech-savvy, so technical answers are more than welcome!
Update: I just found another backup from two weeks ago, and that does the EXACT same thing! It takes forever at "Loading Resources", and then spawns me into a fresh world without anything we've done. It also acts extremely laggy and doesn't work properly. How is that even possible?!