different frame counts in the source and in the destination file

[i4004]

i ment original poster should do it, not you, nothing for you to do here, it's obviously issue of container from 1992 used(and abused) for all sorts of things.
but good thing you did it anyway...heh...

oh yeah, nothing could stop me from exactly inspecting which frames were added or removed, in 50 frame increments on timeline...