A bit of an update to my procedure when merging Fiber Brows and Lashes (by Colm Jackson).  I'm also using some products by Lyoness, like the Every Girl Kit for G38F, and a couple of others.  The point is, these kits have full body morphs, and full head morphs, so when you merge things like the lashes and brows, you want them to follow the head morphs, and the brow and eye morphs.  So, prior to the Merge process,  you will need to set a value for all the dials that affect the brows and the eyes in order for those dials to work in Carrara.  I used this workflow on Genesis 8 Female via the preset by Misty.