Question regarding duplicate Folder "Sent Items"

Not sure how it started, but when I saw this first the user had an search-folder in his (german) client with "Sent Items.dup1" (in german "Ausgangsnachrichten.dup1").

The GWCHECK-runs did not show any problems before or afterwards. Since this ".dup1" was somehow annoying, the user renamed the folder to "Sent Items", but since then GWCHECK showed "79 Duplicate Folder-Problems".

As next step I did some GWCHECK-runs with the "deldupfolders"-option and ended up with having "Sent Items.dup1" (or 2, I cannot remember exactly!) again. Afterwards GWCHECK did not show any problems.

Deleting and recreating the folder also did not help, The "79 problem" showed up in GWCHECK or finally the folder had its ".dupx"-ending.

I now had a view with EXCHNG32.EXE (XP and WIN2K) on the users-account and besides the "Sent Items.dup1"-folder found a second folder "Sent Items", which does not show up in the GW-Client.

EXCHNG32 does not allow me to remove the "Sent Items"-folder (without .dupx), so I end up here, seeking for help.

Is there any other option in GWCHECK, I could try or a way in EXCHNG32, to remove the hidden folder from there?

Thanks in advance.

Karl