VERIFIED SOLUTION i

How to make weblink point to a different(non-default) Data Flow Service(DFS) in Sagent Data Flow

Valid on all Web-link set-up under all platforms
If Web-link is installed on 32 bit machine or a 64 bit Web-link is installed on 64 bit machine:
  
On the machine where Web-link is installed, we need to update the Agent Machine and Port in Registry key HKEY_LOCAL_MACHINE\SOFTWARE\Sagent\DataMart\DC with machine name (or ip) and port on which the new DFS is running.
 
 
If 32 bit Web-link is installed on 64 bit machine:
 
On the machine where Web-link is installed, we need to update the Agent Machine and Port in Registry key HKEY_LOCAL_MACHINE\SOFTWARE\Wow6432Node\Sagent\DataMart\DC with machine name (or ip) and port on which the new DFS is running.
UPDATED:  October 25, 2017