There seems to be a bug when importing CC2 iAvatars into CT8 Pipeline. After dragging&dropping the iAvatar file into CT8 it is not possible to apply Cloth or Actor Styles to the character. The mesh disappears as you can see from the attached screenshots.
There is also a problem with the Realistic Head Textures: It's not possible to use the textures as CT8 give an error message that the RLHead file is corrupted (please see screenshot 2).
I used the CC1.5 / iC6.5 export presets and traditional texture setup in CC2 to generate the iAvatar file for CT8.
I've also tested with some old CC1.5 exported iAvatar and it works correctly with these files.