Hey Patrick
I think you should simply pickwick your partical postion(x,y) to the tracked data position.
Iff you are using trapcode particular, pickwick the emitors postion x,y to the x,y tracked data.
If you moved the camera backwards, i think you will be needing an other program like boujou to track.
Is it a filmed shot or (not-real)shot made in AE?
T.