TSeelow, then John, then Bud. Spiritual transformation to me is God's work in helping a person become like Jesus. Simplistic but reality to me. John, Your question is one that plagues us all. It is very difficult to get persons to change groups.
Multiplication is painful.
My suggestion is that you make sure they are aware multiplication will come beginning with the first meeting. Have an apprentice in place. Leaders must consistently cast the vision of multiplication. This makes this easier when the time comes. Bud, its important that a group stay in place as long as it takes to go through the process of becoming community, living in community, and experiencing community for a time.