1) Open c:\program files (x86)\citrix\independent management architecture\mf20.dsn using notepad
2) Make the required change
3) Stop the IMA service
4) Open command prompt and run the below command, replacing the username and password. If copying the below command to notepad, re enter the speech marks ( ” )

dsmaint config /user:domain\svc_<xxxxxx> /pwd:password /dsn:”c:\program files (x86)\citrix\independent management architecture\mf20.dsn”

5) Start the IMA service

6) Run sc \\%computername% query imaservice  and ensure state is running
7) Finally copy the mf20.dsn file to other xenapp servers and follow steps 3-5 again.