RoboCopy with Exclude

I am using robocopy to mirror two servers, with some exclusions.  For some reason when I test the robocopy locally from one dir to another it works, but if I use the same command, but with a mapped drive as the source, then the exclusions stop working.  Here are the two examples.

robocopy "c:\xamppdev\htdocs\opticselect" "c:\test\htdocs\opticselect" *.* /mir /s /xd c:\xamppdev\htdocs\opticselect\Connections c:\xamppdev\htdocs\opticselect\Connections\test c:\xamppdev\htdocs\opticselect\intranet\Connections c:\xamppdev\htdocs\opticselect\intranet\uploaded_files r:1 /w:1 /SEC /NP /LOG:c:\xamppcopy.txt /tee

robocopy "\\192.168.10.99\c$\xamppdev\htdocs\opticselect" "c:\test\htdocs\opticselect" *.* /mir /s /xd c:\xamppdev\htdocs\opticselect\Connections c:\xamppdev\htdocs\opticselect\Connections\test c:\xamppdev\htdocs\opticselect\intranet\Connections c:\xamppdev\htdocs\opticselect\intranet\uploaded_files r:1 /w:1 /SEC /NP /LOG:c:\xamppcopy.txt /tee

As you can see they are exactly the same command, with the only difference being the source dest.  Yet the results are vastly different.

Any help would be greatly appreciated.

TK