Thanks very much for the constructive comments on the feedback that I provided. I'm trying to keep my focus on 'things that impact participation and moderation' - let me know if it ever seems otherwise.
I have two points to make that I'm not confident have been fully considered, and some meandering thoughts that might be completely irrelevant:
Non-separation of DID is not necessarily a failure of rigor
Firstly, dissociated identity refers to DID. We are not a DID community. DID is not a comorbid diagnosis for PTSD. DID is a standalone personality disorder.
I agree that DID is a distinct diagnosis from PTSD, however it is a very powerfully linked diagnosis, in a way that other diagnoses aren't. If one believes the theory of Structural Dissociation (many people here do, I am one of them), then PTSD is very similar to a simple fracture of the mind, while DID is a compound fracture of the mind, sustained while the mind is still growing. As such, separating PTSD from DID (and DD-NOS) is not as simple as separating PTSD from most other things.
I was diagnosed with PTSD by a consultant psychiatrist, and that diagnosis was revised (by the same psychiatrist) to DID 12 years later. This is very personal evidence of the difficulty of differential diagnosis, but I think it's valid evidence.
Dissociation of identity is a potential feature of PTSD. "I can never go back to being the person I used to be" "It hurts when I remember being happy" - these are things that PTSD sufferers describe. Not all dissociation of identity is DID (just as not all post-traumatic stress is PTSD).
If you are separating into subforums on the basis of PTSD symptoms, then the structure I proposed is not incompatible with that objective.
Moving DID conversations seems fraught to me
I strongly suggest that the admin team come up with a guideline, and make an effort to apply that guideline to a representative sample of the existing threads in the Flashbacks & Dissociation subforum. Please do it separately, and see if you all end up in the same place for each thread. Please consider how you'll explain to people how they're going to find the topics that they're looking for, and anticipate the reactions when threads get moved.
I can't imagine a guideline that will work; I fear that this attempt to separate DID will cause confusion, distress and unnecessary work and conflict. I may be wrong. There may be other priorities that override these concerns, even if I'm right. Regardless of this particular concern of mine, the exercise is probably worthwhile in a broader sense anyway.