Michael's program essentially does much of the work of changing the voices in styles and midi files from older Yamaha keyboards to voices within styles of your new keyboard. And, it can do this in batches as well as individual files, which is a great feature. With some files, however, you'll still need to do some fine tuning in the keyboard itself using the onboard programs.
Gary
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PSR-S950, TC Helicon Harmony-M, Digitech VR, Samson Q7, Sennheiser E855, Custom Console, and lots of other silly stuff!
K+E=W (Knowledge Plus Experience = Wisdom.)