What is for you "the archive"?
The PDF Explorer database, or the disk folder(s) where you have these files?
If second option, when you scan these files using the DiskTree scan mode, at end of the scan are all these 602 files present in the scan grid, or only the 556?
If only the 556, check if the ones that are not indexed are not corrupted files, making PDFE to discard them. If files are OK, please send me one of these so I can check for why PDFE fails to index it.
If first option, what is the scan method you are using to query database for these files (DBDiskTree, DBDisk, DBSearch), to realise not all are showing?
The web server uses the same routines to query the PDFE database, so, you will not find more files than the ones you can find using the PDFE GUI scan tools. Only after all the files are indexed using the GUI DiskTree scan mode, and the source folders of these file are enabled for the user accessing the web server, (check under the Web server "Users and Permissions", Groups options, if you have web access users/groups defined) the user will be able to search for these files.
If I'm getting all wrong, please try to explain it again
