How can I open a YMap folder that has .ydr, .ydd, .ybn, .ytyp, .ymap

I am trying to open up a YMap in Codewalker and OpenIV but I don’t know how to do it. There are multipule file types in the videos I found online and forums they always only have 1 ymap file and nothing else, yet I have around 20 ymap files for the same resource and a bunch of different file types for the same resource.