Ah, I think I get what you are saying now. What you experience fits the diagnosis you have been given rather than being diagnosed with something different. Like your different identities are because of your CPTSD and not DID. Your dissociation is because of CPTSD and not a dissociative disorder,and so on.

I believe that is how it is for those of us that have PTSD or CPTSD, our experiences and symptoms meet that diagnosis, otherwise we would have additional or separate ones.