This problem still occurs in Character Creator 3.32. I had a crash when changing the eye color in Headshot and the restored file did not include Headshot information.
I just found that after saving the project as a regular ccProject and then reloading, the Head Shot information seems to be back.
Just a reminder that this is not fixed in 3.22 and really requires some urgency in being addressed.
It would probably be clearer to say that all Head Shot information is lost.