I have that plugin by Alberto, but...I've never used it.  I find it easier to just dive into the data folder and zip up or delete the morphs I don't want to use.  When I load the Fiber brows and Peach fuzz Carrara spends an awful long time 'Projecting Morphs'.  Since the attachments are to the head, I take it that the 'Projecting Morphs' reads all the head morphs in the character file, so when I dial in an expression, Carrara knows how to adjust the shape of the attachment.  Am I correct in that assumption?  If that's the case, then that would explain the file bloat.