Has any of you experienced it?
I've checked this KB article https://mysupport.mcafee.com/Eservice/Article.aspx?id=KB73268 but i really don't know how to adequate my current rules to MEG 7.0, it's really diffrerent.
For example, i don't know what to do with Envelope Analysis rules and other things.
Don't be in a hurry to migrate off MEG 6.7.2. It's a very stable, and well performing platform, and will be supported for another few years - http://www.mcafee.com/us/support/support-eol-appliances.aspx.