Blendshape export for Unity, Lip sync, visemes

Hello everyone, I hope someone can help me.
I have a problem with character creator 4 or rather I just don’t understand it. i’m trying to export lip sync visemes as blendshapes for unity. I found out that you have to check two boxes when exporting. that worked the first time and the blend shapes work in unity. the next time I exported an avatar template it suddenly didn’t work. I then created a completely new character twice. for one I reduced the geometry of the clothing. for the other I didn’t. for the character with optimized clothing the blend shapes didn’t work in unity either. I don’t know what i’m missing. does anyone know anything about blendshapes and the export in character creator 4?



I figured out, that the blendshapes in the skinnedmeshrenderer in unity are available mutliple times. so the ‘Ah’ Blendshapes are there for example four times, but only one of those for ‘Ah’ blendshapes work correctly. Does anyone know why?