SEP 11 clients not updating on SEPM 12

I have a SEPM on 12.1.4104.4130 and have been migrating clients over to the new SEPM by pushing communications package everything has been going well as have a mixture of SEP 12 and SEP 11 clients on the manager. I noticed that on the 25/06/14 all the SEP 11 clients have stopped updating checked the manager and defintions are up to date and SEP 12 clients are updating fine. Prior to this date they were updating with no issue. 

There are no GUPs and these cleints are picking up directly from the SEPM itself. There is no LUA the SEPM goes directly out to the internet for updates.