There are numerous errors in the GWCheck logs for messages failed to
archive for one user. The cause is usually insufficient disk space in the
archive path. I moved his archive folder to a place with more disk space
sometime last year. It seems that the messages that were unable to archive
at the time are lost in limbo. They are no longer in the user's inbox and
are not in the archive. I spoke with the user and he stated that the
messages are no longer important.

The errors in gwcheck look like this:

Error 83- Item failed to archive
- Subject: Fwd: Dayton VA emergency renovation
- From: John Hall
- Date: Nov 6, 2009 - 1:47 pm
- First archive attempt date: Jul 25, 2011
- Number of archive attempts: 1
- Error number on last Archive attempt: 0x8204
9938 ITEM_RECORD check
Error 83- Item failed to archive
- Subject: Fwd: Building 700 Elevator and Building 701 Demoliton Facade/
Canopy Work
- From: John Hall
- Date: Jan 6, 2010 - 1:29 pm
- First archive attempt date: Jul 25, 2011
- Number of archive attempts: 1
- Error number on last Archive attempt: 0x8204
10585 ITEM_RECORD check

....ETC...

I found TID 7009495 that states the following:

Resolution

WARNING: THE FOLLOWING RESOLUTION WILL DELETE MAIL

GroupWise POA code level minimum must be 7.0.4 or 8.0.2HP2.

Run the following options on one or more users before running it against
an entire post office.

1) Run a standard expire reduce that covers the dates of these items and
verify that they are not purged (because of the outstanding archive
failure)
2) Add the IGNOREARCHIVEFAILURE option on the MISC tab of GWCheck and run
the same expire reduce again.
3) The new option should allow the items to be purged.
Additional Information

The most common reasons that the GroupWise items failed to auto-archive is
either because the archive disk filled up or there was a disruption in
communication to a remote archive store.

....QUESTION...
Will this only "delete" the failed to archive messages or will it affect
any messages for that user during those dates? I don't want to
accidentally delete any messages that need to be kept. I just want to
clear the messages that have failed.

Sorry for the long message. Thank you for your help.