User Modification Template Group reassignment issues

User Modification Template Group reassignment issues

I have upgraded to version 6, hoping of utilising Modification Template for reassigning security groups based on template. So i have create 5 Modification Templates and each template has its own set of security groups. 

When i apply template it adding user to missing groups from previous template but not removing user from old groups.

Is that suppose to be like that?

thanks,
Evgeny