If full integration/unification isn't where you guys are headed right now I think that is a MIGHTY BIG thing to disagree on with your T. Then again, chances are your T might define integration differently: For some it just means increased ownership of and making peace with your history. Of course the idea of an "original self" doesn't sound promising, though some people feel that way (especially in secondary structural dissociation where there may be a single ANP - maybe your T worked with someone previously who saw themselves as having an "original self"? )
I'd question them some more for sure and discuss your own aims as far as you have them figured out amongst yourselves.
Our T has very limited pre-existing knowledge about dissociation (though she has a background in trauma work) but she is open minded and supportive enough for us to learn together. So you don't always strictly need a T with D.I.D. experience, but IMO you do need someone who will listen to you and respect your basic choices (i.e. unification etc) so that all of you can become comfortable with your new T over time.
Personally I'd be straight forward about your map. Those who are happy to be on it can give limited details (just what each is happy to disclose). I'd be open about the fact that not everybody is happy to divulge info yet. If your T doesn't understand that, that's further indication that they don't know as much as they think they do. Chances are though, your T might expect not to hear from everybody yet anyway.
Heck, it took a year of weekly sessions with our T for one of my Others to be comfortable enough to speak directly with her in session. A bunch of others haven't yet, and we've been seeing her for near on a year and a half now. Mind you, for the first year we were constantly debating leaving treatment and looking for somebody else. I am glad now that we didn't. These things take time and I think it is sensible to take it slow.
Your T might just be really optimistic

Not a bad little trait IMO as long as they know to give you all the time you need as well.
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