We have clips created using Canon digital camera that work fine when brought to a new sequence in Premier CS6. Sequence set for Canon Mxf 1030p. When we import MPG clips for intro and close that were created earlier in a DV-NSTC format, we lose the audio/video synchronization in all the newer mfx files. We tried converting the DV-NSTC settings to the matching mxf format, and still get same result. Does anybody have a clue as to why this is happening? Also, the earlier files do not fully ajust to the correct frame size... have to adjust manually in project screen. Working on MAC OS 10.7.