The File Priority Analyzer (FPA) is similar to the Simple Airport Scanner.  However it is integral to ADE and deals with a single airport at a time.  In addition to identifying the loading order of bgl files containing the airport it also looks for files that do not contain an airport but do contain scenery objects that are located within and close to the airport.  It also provides tools to rename , delete or disable files.  Disabling is useful if you are trying to find out what file is causing problems in the display.

File priority is about the order in which files are loaded by FS and therefore what displays and what does not.  This article covers loading priority:  https://scruffyduck.screenstepslive.com/s/help_docs/m/20268/l/199760-priority-matters  and the file priority analyzer is intended to show the order for a given airport.