What version of Carrara are you using? Your listed software looks to be a couple of versions back so I don't know if that is also true with Carrara.

The usual method is to actually do everything in Carrara and bypass the import process. Imports seem to be inconsistent with Carrara and other DAZ scene building products. Also, since you can do everything in the program, there really isn't a need to work in another and then import.