Can't open new worlds from other people

Buenas,

When I try to load new worlds by putting on de directory MinecrftWorlds  any map---C:\Users\xxxx\AppData\Local\Packages\Microsoft.MinecraftUWP_8wekyb3d8bbwe\LocalState\games\com.mojang\minecraftWorlds ----  when i restart the game, in the maps appears without name and the data 01/01/70. When I  enter into the map, iin every map i have tried, appears the same map, the small island I show in the capture. I've tried a lot of maps. Thanks