NVivo: Why Can't I Find My File After I Converted It to a New Version?

The default location for NVivo files is the Documents folder on your C: or Mac drive.  If you are unable to locate it, you can use Windows File Explorer or the Mac Finder to locate it.  If you can't remember the name of the file, you can search for the file extension.  Windows files end in ".nvp" and Mac files end in ".nvpx"