When converting to Game Base, the GoZ-button is greyed out. This makes it difficult to quickly edit characters - and also almost impossible to make new morphs that can be sent to iClone for the Morph editor, so they can be added to the character for further use in Unity/Unreal.

With the standard characters you can GoZ, make the morph you want, GoZ back, then save it as a morph and export it as an iAvatar. You can then send your character to iClone to add it as a morph with the morph editor.

This is not possible with the Game Base-characters, which is probably the characters needing it the most, as you want the morphs to be active outside of CC3.