The use of a 0 time transition between 2 slides presumes that the ending of the first slide is identical with the beginning of the next slide.
Unfortunately this is not the case of the Filmstrip style made by Photodex.
The beginning and the end are quite different, and that is why you see the jump.
In other words - If you show x then y and then x again, you are bound to see jumps.
What you can do is either:
1. Prepare a new graphic file of the filmstrip that is for 10 pictures and recreate the style from scratch
This may take some time, and some planning, so it's not such a great idea.
2. A better idea, I think, is not to try to hide that there are 2 filmstrips.
Instead of hiding, try to emphasize the jump
Place a 3 seconds transition in between. Choose something with movement, that really shows that one filmstrip is being replaced with another one, and this should do the trick.
Hope this helps.