My MA supervisor, who has always written LoRs for me in the past, has just recently suggested I use a different referee for my SSHRC application. He suggested I might have more success using someone whose research aligns with mine, and someoe who has worked with me more recently (I did my MA with him 12 years ago!). The only issue is that SSHRC asks for the MA supervisor to write a letter, no? I'm not sure what to do, and so I contacted my current external examiner for my PhD (who knows me through other work in the field), and is happy to write a LoR for me. He's a better option by far, and well known in my field, but he's not my MA supervisor. Of course my current PhD supervisor is writing me a letter, but will it be an issue if my MA supervisor is not my second referee?