Minecraft xbox 360 world restarted?

I saw their was an update for minecraft xbox 360 edition, however i didn't want to update yet so i went to the home menu. I went back to minecraft and then i saw the menu changed, i thought nothing of it because i thought it might have just changed that much. I then loaded up my main world (which i have worked on since tu1 or 2) only to be put in the middle of nowhere on a completely different map without any of the things i had built. I was getting a little worried since i had put alot and i mean ALOT of work on that map. So i went to the xbox home menu and turned off the console and went back to the game to see that the menu was back to normal (it updated first and i let it update, but it didn't add anything in fact it just said it had added the things from the previous update) so i loaded up my main world and i was put into a new world again. You can still see a small picture of the world on the side, but it still starts the world over when you select it. Is their anything i can do to get the old world i had worked so hard on back?

Minecraft Xbox 360 to ps4?

Can you get minecraft cheaper on ps4 if you bought it on xbox 360, I've got the 360 version and I can get it cheaper on my Xbox one but was wondering if I could also get it cheaper on ps4?

Minecraft xbox one not showing as $5?

Why won't my xbox one allow me to get minecraft for the reduced price? I own the 360 and am not happy at all that it won't show up as $4. It just says $19.99

Do you keep your xbox 360 version of minecraft if you do the $5 upgrade for xbox one?

The xbox one version of minecraft is coming out and I want to get it and I'd rather pay the $5 upgrade instead of the $20 for the normal cost but I still want minecraft on my 360 so I want to know if I do the $5 upgrade do I get the xbox one version and keep my 360 version or do I just get the X1 version? Also on my xbox I have a digital copy not a disc