Thank you. But I don't understand what the point of the features WAS.

This is what I found as written in Poser 8 Revealed: The Official Guide

Reflection Lite Mult. An option to multiply the lighting effects into the reflection map.

Reflection KD Mult. An option to tint the reflection map by the diffuse color

And here is a posted discussion from 2007 on why not to use it.

https://www.renderosity.com/rr/mod/forumpro/?thread_id=2696787