Hi all,
Just a bump to let you all know that the problem is resolved and my script now works. I tried to post my now-working script as a new post in this thread but it wouldn't work for some reason, so I edited my second post.
I'm not sure if the problem I was having with the email processing is somehow unique to my situation, maybe if others are able to test both my script and the mbox user migration script from the Zimbra wiki and compare results we'll have a better idea.
Cheers
