Digital Parallax Slideshow Issues

I have a digital parallax slideshow which originally had 11 slides which were pre-composed and inside they contained a image holder which was also pre-composed. When i have duplicated the slides, as well as the image holder and added new images to slides 12-22 the slides show both the image which was in the original slide (i.e. slide 12 has slide 1's image in as well as the new image.)

Does anyone have any idea why this is happening? if i go into the slide and hide all layers the unwanted image still shows.

I appreciate its hard to say without see all the settings, but any sort of input would be helpful.