Scan MP3 Folder

There are two options 'Get Info from ID3vx tags' and 'Get Info from file and directory names'.

My scenario ->

I want to use dir/filenames as such and see/use other ID3 tags info..

What I do is..

First scan MP3 CD with 'Get Info from ID3v1/v2 tags' checked and then scan the same CD with 'Get Info from file and directory names' checked (scan ID3v1/2 unchecked).. This way I can see normal ID3 tags info and Artist and Title as I have as true dir/filenames.

Is this normal behaviour of 'Get info from file and directory names' ? Because it doesn't seem to gather the same ID3 tag info as the other option excluding the Artist/Title fields.