Elements 13-up: Slideshow missing features, unable to support upgrade from earlier versions

I recently upgraded from Elements 9 to combined Elements + Premiere 13 with the express intention of creating a DVD from a slideshow created in Elements 9. I am extremely unhappy to discover that the slideshow functionality previously supported in v9 is no longer available. Specifically: transitions between slides and the ability to associate music with the slideshow. I have spent over £100 to upgrade as well as a considerable amount of time and effort. Please can Adobe please provide a 'downgrade' to v12 so that I can still use my slideshow functionality? Adobe have falsely misrepresented their 'upgrade' - which was actively marketed in my earlier version without any 'buyer beware' warnings.