Not really in so many ways the kORG songbook is FAR superior...
for starters try saving a reg song in a transposed key to the music finder on a Yamaha?....
the MFD is archaic for my needs never used it much.
It has many good features also needs a (text size option for the menu list too,).. but the MFD isn't one of them sorry.

Registrations and the Music Finder Directory are two, totally separate features on Yamaha arranger keyboards.

Gary