Installer uses Extermal Tab file version rather than actual file version

I learned something about SUF today that I didn't realize before. If you specify a file in the External tab, the Installer uses that File Version to determine whether it should overwrite or not. It does not use the File Version of the actual file in source directory, which may be a different version. SUF should check actual file versions, not use the file version from the External Tab. (The Archive Tab is another story). In my opinion it defeats the primary benefit of have an External Files tab. I hope this makes sense.