Sad to say but there ain't no such animal.
However, you might, through a series of steps be able to accomplish it.
FTM has both a windows version and a Mac version.
FTM 2012 will also import TMG.
So, the process would be:
1) upgrade to TMG 8.0
2) import the TMG 8 info into FTM2012 (windows version)
3) inport FTM2012 (windows) into FTM (Mac)
That isn't inexpensive (cost of TMG upgrade+cost of FTM(Windows)+cost of FTM(Mac), but it could be done.
Others may know a simpler way.