Exports update metadata (but not content files, approvals, or server settings) to an export package file. Then importing ...

Exports update metadata (but not content files, approvals, or server settings)
to an export package file. Then importing the package file on another WSUS 
server allows that server to synchronize without using a network connection. 

export  
 : Path and filename of the package cab to create
: Path and filename of the log file to create