I been using materials out of Lightbox more and notice a big issue doing this.
Example: I would go into lightbox get a skin matcap then fill the subtool, then I would go back into lightbox again for a Eye matcap then fill a different subtool it works but my previous matcap I filled with for the skin turns into the eye matcap also.
This is very odd and annoying how can I get around this issue to efficiently and quickly fill subtools with materials I have in lightbox? 
When you load a material this way, you’re essentially replacing the currently selected material with the new one. If you want to load several materials from lightbox, you need to replace several other materials first.
So basically: after doing the initial material fill, use the material palette to switch to a material that you don’t plan on using, and then use Lightbox to replace itwith the one you do want. Rinse and repeat
Personally, I keep a few duplicated ‘swapper’ materials in my zstartup/materials folder so that I always have some spare materials in my palette to swap out.
Thanks I guess thats the best way to deal with this Issue gonna go make some swappers. 