Hasta La Motion!

hi…i am a newcomer in matchmoving……I am using boujou and maya 2008 softwares…..my prob is; I matchmove the shot almost perfectly, if not 100% perfect, as well as test it using add geometry option in boujou!…and it works perfectly there!..i.e. geometry perfectly matchmove with the shot thier in boujou!……but the prob starts when i export the camera and other info in maya…..and when i add a geometry or anything else there so as to match it with my matchmoved camera in the shot…it, i.e. the geometry,..does not match perfectly….after some frames it does not match the shot/video!!…..

So, I want to know wht am I doing wrong in that?….what can I do to correct this prob?…..as far as i know now i understand most of the things in matchmoving after spending lots of time in watching tutorials and reading stuff related to matchmove….but this prob is very frustrating for me :(…..as i am not able to create something for my showreel …….so please anyone there can help me out here!!!….hopefully will get some positive response from this forum!!!…:confused:

thanks in advance!!