I am having a similar issue:

EXEC master..xp_cmdshell

"dir \\fserver1\NextgenRoot\Prod\EMR\Images\ImageSaved\84C06D96-D350-47ED-B26D-BF1A794D93A6.pdf"

Results:

Volume in drive \\fserver1\NextgenRoot is Data

Volume Serial Number is 3CEC-F907

NULL

Directory of \\fserver1\NextgenRoot\Prod\EMR\Images\ImageSaved

NULL

09/28/2014 01:29 PM 413,455 84C06D96-D350-47ED-B26D-BF1A794D93A6.pdf

1 File(s) 413,455 bytes

0 Dir(s) 15,483,371,520 bytes free

NULL

But when I try to move that file:

EXEC master..xp_cmdshell

'MOVE "\\fserver1\NextgenRoot\Prod\EMR\Images\ImageSaved\C06D96-D350-47ED-B26D-BF1A794D93A6.pdf" "\\fserver1\NextgenRoot\IHS_DocsImagesToBeRemoved\C06D96-D350-47ED-B26D-BF1A794D93A6.pdf"'

Results are:

The system cannot find the file specified.

Clearly the file is there but the move command cannot find it. What am I missing?