AlexBohner wrote:

I have rules configured that will move
incoming messages to my personal accounts to a local .pst file,
effectively keeping them off the corporate exchange server, but I
haven't been able to do the same for sent messages. Under Sent item
rules I can only find options to 'Move a Copy' of a message, and not
truly Move the Message.

Disable the option to keep sent items in the Sent Items folder and then the
"move a copy" action will be a genuine move. Make sure you include the
"stop processing more rules" action and include a catch-all rule that moves
all mesasges to the Exchange Set Items folder. That way anything not moved
to a PST-specific Sent Items folder by the other rules will be saved to the
Exchange server's Sent Items folder.
--
Brian Tillman