jim wrote:

It seems to have worked ok. Why would MS recommend using that method
if it results in losing mail?

At least some of the articles that suggested exporting and importing have
been changed to suggest other methods first. Importing and exporting have
their place, but rarely when the goal is to move Outlook data between
instances. Just as you would never think of exporting a Word document to
transfer it to another Word instance, so to should you avoid exporting to a
PST to move data to another Outlook instance. Your data is already in a
PST. No need to export to another one.
--
Brian Tillman