The changes you made will not be saved as part of the actor because they are keys stored on the various object tracks and not in the actor object itself.
Just as a motion is not saved with a character neither are any deform or transform keys.
Unfortunately I don't believe that the collect clip will grab those keys, only motion related keys, so you can not save them out and apply to the character again.
In composer Mode you can only change the size, position and aspect (H/W) of the various sprites that make up the character.
You can also replace the sprites with new ones drawn to your requirements.
Jeff
Get my Plugin Manager and TaskNotes plugins for iClone.
Check out EZColors and Other products for CTA/CA. EZColors: the easy way to change Render Styled (RS) colors!
See my CTA Tutorials on the YouTube channel CTAStepByStep