BioWare has said it has “fixed the issue of faces not correctly importing into Mass Effect 3,” and the issue will be addressed in the next game patch. An exact date for the patch hasn’t been set in stone just yet, as it’s going through a heavy testing process. “We all want to be sure that it fixes the issues it is supposed to fix and doesn’t start any new issues,” said Chris Priestly on the BioWare forums. “If a patch fails during testing, it is sent back, fixed again and retested until it passes. Then it is released to gamers. Until we know that the patch has passed certification testing, I don’t want to give even a rough idea of the date, to prevent disappointment should it need further testing.”
Until the patch is released, you can always use this workaround – on PC at least.