Files not being archived

Hi All, I need your help with the following:

I am trying to upload a file (small log) from a client.
On some clients it works fine and on some the file is being uploaded at all, though the agent log sais all is OK:

Command succeeded setting “_BESClient_ArchiveManager_OperatingMode”=“2” on “Sun, 24 Dec 2017 06:37:46 +0000” for client (action:6765)
Command succeeded setting “_BESClient_ArchiveManager_FileSet-(Log)”=“c:\rse\txlogs*.log” on “Sun, 24 Dec 2017 06:37:46 +0000” for client (action:6765)
Command succeeded setting “_BESClient_ArchiveManager_SendAll”=“0” on “Sun, 24 Dec 2017 06:37:46 +0000” for client (action:6765)
Command started - dos del c:\rse\txlogs*positwip*.log /Q (action:6765)
Command succeeded dos del c:\rse\txlogs*positwip*.log /Q (action:6765)
Command started - dos del c:\rse\txlogs*positive32*.log /Q (action:6765)
Command succeeded dos del c:\rse\txlogs*positive32*.log /Q (action:6765)
Command succeeded copy “c:\retalix\Logs\POSITIVE32-20171224.log” “c:\rse\txlogs\14240688_6765_positive32-20171224.log” (action:6765)
At 08:36:53 +0200 - actionsite (http:/:52311/cgi-bin/bfgather.exe/actionsite)
Command succeeded archive now (action:6765)
At 08:36:53 +0200 -
ActionLogMessage: (action:6765) ending action
At 08:36:53 +0200 - mailboxsite (http://:52311/cgi-bin/bfgather.exe/mailboxsite14240688)
Not Relevant - Upload POS Logs (fixlet:6765)
At 08:36:55 +0200 -
[ThreadTime:08:36:55] Starting upload of file ‘7c3a3a8a612b94904bf058e3d16810a19ba547d5’ of size 1955
At 08:36:56 +0200 -
[ThreadTime:08:36:56] Successfully uploaded file 'C:\Program Files\BigFix Enterprise\BES Client__BESData__Global\Upload\sha1\7c3a3a8a612b94904bf058e3d16810a19ba547d5’
At 08:37:02 +0200 -

At the end of it the files are not in the UploadManager folder.

Any ideas?