Rigged XPS model's to Character creator 4

Hi,
I have several 3d models in XPS format that I would like to bring into iclone to use with my animations.

The models already have a preexisting rig including some cloth rigs. What is the easiest workflow to get them into cc or iclone with a full facial rig.

I tried with Accurig, however that looses the existing face rig.