As you may or may not know UFT is a dead in the water software package. A year ago about this time Genealogy.com put the brakes on any more work on it. Since that time the support has gone to zero, except from users.
Family Gathering was, what I called a restricted version of RootIV in a Windows package. The data format is the same as the present RootsV which became UFT. The difference being with UFT you had more control and more fields.
The Master Genealogist (TMG) has a transfer method called GenBridge which will take you FG data and import it into TMG. TMG is where most UFT users are going.