Charlie,
You were right on the money, thanks for the heads-up. When in doubt, RTFM. I was trying to write a script to do what SME-Server is already designed to do; I must be thinking in Microsofteze as they would never design such a well thought out, full featured product that doesn't try to capitalize on upgrades or add-ons.
The 2 features you pointed out will do the complete job! With a little planning, I have my e-mail server up as in always was, my ibays are back as they were, and users/permissions were unaltered.
Absolutely amazing work. My hat would be off to Mitel / E-smith if I wore one!