In message "Russ Valentine"
was claimed to have wrote:

Confirm if we know what?

My guess would be he's asking to confirm whether his above-described
actions result in the above-described result.

In other words, he's asking whether dragging mail from "the server"
(Exchange or IMAP would seem to be likely here, since otherwise there
wouldn't be a server to drag from) to his mounted Archive PST is similar
to using "the traditional way" (of archiving -- aka, the archive
wizard/tool)

Original poster: Have I understood your question correctly? You want to
know for certain that dragging messages from your Exchange or IMAP
account to your Archive PST removes the messages from the server similar
to how the built-in archive tool does?

If I've understood correctly then the answer is that yes, this should
work.