The working version for all is 2013. Our licensing type is SNL. I want to begin testing 2014 and as far as I know I must update licence manager on licence server.

My question is if licence manager software permits backward compatibility and I can use 2013 and 2014 on the same snl.

My var told me that for these new versions this backward compatibility does not work. I made a search in KB and don't find any restriction on using older version on the same snl manager.