Your looking at the name and your like "what happened that is so weird" well I will tell you. It was the second time I went on to my windows 10 that day. I was going to play on my best world were I found diamonds. When I went to the
world list, there was something weird. It was my only world on my windows 10. (Of course I have more worlds on pocket edition and xbox). I saw that my world had no name (Its name used to be DIAMONDS!) I went to the world options and then the next weird thing happened! The seed was 0! I went on the world and for some reason the world was in creative! I knew that the last time I played I left it on survival. I knew I would not get any acheviments anymore so I deleted the world. If you know what happened please tell me.