Minecraft save not showing up in AppData?

I have a minecraft world that i've been playing around with for a few months and recently i got a much

more powerful computer so i want to move my game there. Problem is, the save file doesn't exist. I went

to C:/Users/Evan/AppData/Roaming/.minecraft/saves and the only thing there's a file titled "New

World". My save file is titled "airport". But when i actually play the game and go to the select world

screen, my file is right there. I click on it and it opens and i can mess around in it just fine. So that

means the information must be somewhere right? Where do i find it? I use the teamextreme minecraft

launcher if that makes any difference

"i use the teamextreme minecraft launcher if that makes any difference"
That makes all the difference. In your /roaming folder, look for ANYTHING that looks like it has to do with TeamExtreme (Eg: TE, TeamExtreme, Extreme, etc)
Check in that folder for your minecraft saves.
Whenever you use a custom/different Minecraft launcher than the original, everything will be stored somewhere else.
Hope this helps!

Well this is an odd case and you should be correct in the way of looking in your app data folder. But have you tried showing hidden folders? Somehow this may of happened.