my sent mail folder, drafts folder, all mail folder have disappeared, where are they?

i used to have several folders, all mail, sent mail, drafts etc as subfolders under [gmail] but they have disappeared in my acwentz5@gmail.com account. i have another separate account acwentz@gmail.com and those folders are still there. also, on my iphone, both accounts have those folders. so, where are those folders on my desktop acwentz5@gmail.com account???