1) There is no current way (eg command line) to do this.
2) There is no current way to do this either. (You'd have to write a vbscript using CDO - for example - to post process the mailbox and remove shortcuts)
1. Add to some searchable attribute (like Office) some unique flag (I do it usually by Powershell)
2. Run Provisioning task
3. Run Export to PST
4. Choose archives by flag set
5. Export archives