Midi Input Transformers from Previous version not moving to 15

I was opening projects I have where I created midi input transformers for my E-Drum set where the different notes recorded on the same midi channel record to different midi tracks. When I open the same projects in Cubase 15 all my hard work of setting these midi input transformers (lots of days) are not carrying over. All the settings are jumbled up. Is this a bug or did Steinberg change how this works? It’s been working correctly for the last 3 versions before 15. This is a big problem.