If you set the old contacts list property to show the contacts list as an Outlook Address book it should be available as an address book.

OR

You can make the added PST file the default, by saetting the account(s) to use the inbox of that PST file, then copy any recent e-mails etc to the old PST file, before closing that PST file.

OR

With the old PST file open, you can select the contacts and drag them to the new PST Contacts. Repeat for calendar items etc. Then close the old PST file. I wouldn't bother with the e-mails. You can always re-open the old PST file for reference to the old stuff.

The last thing you would want to do is 'Export' the data.

__________________
Graham Mayor - MS MVP (Word) (2002-2019)
Visit my web site for more programming tips and ready made processes www.gmayor.com