I have been working with B7 for quite some time and never had big issues. When I import from Daz to B7, I normally change the materials from Daz to B7, and all works well. I suggest sending each element at the time and changing the materials, and the file can be saved, like for clothing, then sending the figure and keeping it as it is. Finally, you can merge everything and save and u r good. The only real problem is working from figures from G3, G2 figures have low memory problems and pretty much everything can be conserved, even having two figures at the same time in a scene. Everything is known on how to work around it, personally, I had very good results, the problem I'm dealing with is the hair material from G3, G8, and G9 figures, if anyone knows how the hair can look more natural, please let me know.