Knowing the source can help determine if there are specific conversion steps needed. How To Download & Install Minecraft Maps in Minecraft 1.19

: Navigate to AppData\Local\Packages\Microsoft.MinecraftUWP_...\LocalState\games\com.mojang\minecraftWorlds .

The file appears to be a specific Minecraft world or data conversion package, likely used to bridge progress between game versions 1.9 and 1.14.

: While a world can usually be upgraded from 1.9 to 1.14, going backwards is not supported and can corrupt the world.

: Open Minecraft and look for the new world in your Singleplayer list. Common Issues

: If you open the extracted folder and see another folder with the same name, move that inner folder into your game directory. The world won't load if the files are buried too deep.

While there isn't one official "central" post for this exact filename, files named this way are almost always used for or archive transfers . How to Use 1-9_to_1-14.zip