John Mc wrote:

Thanks again. I would always want to replace the entire PST. I am not
familiar with the terms "mail profile" and "delivery location", so
could you please give me the steps necessary to "add the new PST to
the mail profile, make it the delivery location, then remove the
existing PST".

Use the Mail applet in Control Panel to modify an existing mail profile.
--
Brian Tillman [MVP-Outlook]