Ok,
I just tried the smart media card. I have 12 songs loaded into my QY100. I formated a card in the QY100 and my choices are to save/load 1 song or all. I did it both ways. It takes the same amount of time. it took about 5 seconds to load all my songs or just 1 song. As far as the sysex goes, I just don't know the answer. It says in the manual it will save and load XG exc System messages. I can also bulk dump and load data from and to any sequence program.
George Kaye
Kaye's Music Scene
Reseda, California
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George Kaye
Kaye's Music Scene (Closed after 51 years)
West Hills, California
(Retired 2021)