Hi Larry, Not quite sure what would happen. I've got EW03 and EW04 in my KN7000 but never use these voices if I'm going to share the files. I suppose a way round it would be to copy the voice into Sound Memory without actually editing it, use that version in the song and then include the Sound Memory option when saving the song.
I suppose there are two ways to check out the effect - record a song with the expansion voice and email it to someone with a KN7000 without expansion and see what happens, or, record a song and then remove the expansion cards and play it back on your own KN.

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Willum
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Willum

After silence, that which comes nearest to expressing the inexpressible is Music.
Aldous Huxley
( especially when the music is played on a KN7000....)