Problem with SCCM client .bat Package running in 64-bit context?

My .bat script runs the command:

copy %~dp0background1360x768.jpg C:\Windows\System32\oobe\info\backgrounds

and the result is:

C:\WINDOWS\ccmcache\9>copy C:\Windows\ccmcache\9\background1360x768.jpg C:\Windows\System32\oobe\inf
o\backgrounds
        1 file(s) copied.

However it is lying to me and ACTUALLY copying the file to c:\windows\syswow64\oobe\info\info\background

Is there any work-around to this or a way to fix this?