Exchange in Trusted Domains

If I have 2 fully trusted domains each running Exchange servers, one 2003 and one 2007, is it possible to easily move mailboxes from one to the other?  If I can then will it cause any problems if I break the trust relationship afterwards?

What I'm doing is creating a new 'clean' domain and I want the easiest way to get my users moved into it, then I will abandon the old domain.
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From the Exchange 2007 server you can use the command: Move-Mailbox.

tsprksAuthor Commented:
I just want to confirm that using Move-Mailbox will allow me to move an Exchange 2003 mailbox in one domain to Exchange 2007 in another (trusted) domain?
Yes, that's what the tool was designed for.  Rather than use a separate tool with older builds of Exchange, this version (2007) incorporates it.

The syntax is rather interesting, but I'm quite sure running it with a /? or /help should yeild the switches and syntax.


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