Gary! There are some questions about your topic in my mind...
Do you have the ability in your arranger kb to joggle through your parameter libs without changing any settings?
And then pushing one button to set all choices at once?
Do you have (use) an on-board sequencer with several song banks (something like the Kurzweil's song editor) keeping their own MIDI-settings for each song?

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Greetings from Frankfurt (Germany),
Sheriff ;-)