Per this TechNet article, older version TSX is not supported with a more recent version of MSX. However, I have some running, and I can't see a lot of downside. Is it only in SSIS packages, etc? Ideally as we migrate to 2012, I would like to move all servers up front to the 2012 MSX. However, Microsoft seems to be recommending running 2 separate MSX servers. Any thoughts or experiences? Is this flatout not supported by MS?
http://technet.microsoft.com/en-us/library/ms191305.aspx%5B/url%5D