I'm trying to do a forensic analysis of an iPhone, saving a backup which is as raw as possible.
Using iMazing, I can backup apps using <Copy to Mac>:
.or <Manage Apps: Extract App>:
Which is the one which gives a backup that is as raw as possible?
Indeed, why would they even produce different IPA files?
(<Extract App> produces a IPA file that contains an extra <Payload> folder, <iTunesArtwork>, and <iTunesMetadata.plist>.)