Dr. Bernie, when you tried this in Carrara, can only help you if you provide screenshots.

• what were your settings in the reflection channels in Carrara?
• Which modifiers did you choose for the objects? What settings did you use in Carrara?
• Did you use toon override for each object? Did you then reset the toon settings back to zero to get realistic objects even though the toon render would then exclude certain things like hair (and maybe reflection)? Tell us which Carrara settings you have tried. Carrara screenshots, Carrara screenshots, Carrara screenshots.