Outlook 2007

I have used data management to create a new personal pst file and set it as default.
The objective was to create a new empty pst file. All of the data in the old pst file is now in the new pst file.
I would prefer to keep the old contacts, calendar, etc. but have no e-mails to start the new pst file.
Is it safe to delete all of the -emails in the new pst file without destroying the e-mail data in the old pst file?