Couple things... First, scaling by 1000x on the way in, and 1/1000 before exporting, works. There are other tricks to the settings, too -- which can be a little confusing with the unhelpful button labels. Going from memory, it is something like switch off "center in workspace," switch on the "inhibit scale change" (or whatever that checkbox is called), select "vertex primitive" and go on to use "one object per group" and "one polymesh for materials." The last doesn't seem to do anything, but... When the object arrives in Carrara and you've scaled it to a decent working size, hit "Smooth all" to take out the creases Carrara adds (they make it harder to see your morphs.) After that, you MUST do all of your work in the Vertex Modeler. Even there, many of the tools will change the number and/or order of the vertices. Particularly, operations like deformers or boning; they will force you to apply "Convert deformed object to mesh" and that new mesh will NOT resemble the original in vertex order, number, or even grouping (all grouping is destroyed). It should go without saying that as you model your new morph, you can not add, subtract, or weld a single vertice. Which also means mirroring is out, at least by duplication and welding. Your best tools are basically soft selection and manipulator. Lastly. For some reason almost every time I do this (regardless of settings, it seems), the new object imports into Poser correctly scaled and lined up on every axis -- except for the Y axis, where it is maybe a sixth of a Poser unit too high. Because of that, most of my Poser-Carrara-Poser workflow involves re-importing the mesh to Poser after working on it, going into wireframe view and doing a final tweak (and check) of it's position relative to the original. Hope this helps.