When i handle SG9665GC footage in my pinnacle studio 20 i just have to chop off 30 frames if i have a pice of footage that spread over 2 of the files created by the camera.
First i zoom in on the time line, then i use the skip function of pinnacle to skip to that overlap place between file #1 and file #2, and then i manually move 30 frames forward, cut the movie and then delete those first 30 frames of file #2.
I always check after that frame by frame in the editor and it seem to be just what it take with that make/ model.
If its a bunch of files then i off course run them thru registrator viewer so i dont have to process so many file segment overlaps manual.
PS. i am sure i could create some "thing" in pinnacle so i dident have to do that every time manual but then just apply that "thing" to the start of each file overlap, but i am not that hardcore a user of my video editing software.
And it is rare i need to process a bunch of files and if i had to i would just run it thru RV first and that would take care of the overlaps and give me one long video clip to do whatever i wish to in another editing software.