help with in-game map initialization

I created a map, but all the files appear as if they were separate maps when I want to create a singleplayer game, my map is called Archipelago, but when I start a game it appears all the files as if they were several maps Archipelago_biomes, Archipelago_spawn, etc …

What do I need to configure to list only the correct map file?

I am just beginning myself, so i might be entirely wrong. Have you checked on world composition? Afaik you have to, to enable sublevels to be sorted right. And you can check your “Levels” Window, if all the Sublevels are marked as such ^^