terry wrote:

I have a strange problem. I found that a specific folder cannot be
archived. It appears to be successful, I can even found the
corresponding folder in the archive folders. However, the folder is
empty, no emails were archived.

It would appear, then, that the Modified dates of the items in this folder
are more recent than the archive date you've specified. Archiving does not
work on the Received date.
--
Brian Tillman