Well, I think my question comes from the old fear of death, or to be more precise, from the fear of loosing the "me". It's not that issue for me to left the avatar behind, I think.
The real you is your IUOC and not the character you are playing in this life time. You have probably had 500-1000 lives already so that is a lot of characters.
In Jane Roberts "Seth talks", Seth says: "Let me make it clear once again: your present personality, as it exists in your imagination, is indelible and continues to grow and develop after death" (page 120 in German version)
Jane was channeling an entity. She had to take the information he gave her and pattern match it back into her PMR awareness through a filter of her beliefs, expectations, experience, fears, etc. And I think she got some things a little wrong. I think what Seth was talking about was that the QoC, (quality of consciousness,) was left over from each lifetime. And that the IUOC continues to grow and evolve after every lifetime IF they are able to lower their entropy with each experience packet. Otherwise it is a take two steps forward, and then a step back type of evolution. Which is probably more normal. It is unusual for kindergartner level IUOCs to be able to evolve every lifetime. There are always some bad lives due to bad circumstances, bad decisions, bad DNA, and so on.