You will, in all likelihood, have to edit the styles to send the correct PC#'s at the very least, and depending on the module, maybe note #'s too (and reverbs, and velocities, and...).
It's a good idea, but don't expect it to be painless. The days of simple GM compatibility are over. Most modern arrangers have much that is WAY outside simple GM standard...
Which module were you thinking of?
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An arranger is just a tool. What matters is what you build with it..!