I dreamed I dissociated

I don't have DID but in my dream I did; I went from being almost undressed and ready for a nice refreshing shower to standing in front of my closet in multiple layers of clothes and realizing what had happened (that I had "lost" time) and being anxious and frustrated. I had really been looking forward to the shower and now I still had more clothes to take off!

I've dreamed I've fallen asleep while dreaming before and my T said that wasn't real good because it is sort of a double negative, avoiding being awake/alive/aware even when you're asleep! But I can't imagine what dissociating while I'm asleep (and dreaming weird things to begin with :-) might mean.

One thing my T helped me with with dreams was to realize that, as with therapy, it can be helpful to go with the feelings in dreams rather than just the images/what happens. The feeling of anxiety and frustration when I realized I had dissociated and had done it previously in that world, does help me understand a little better what my unconscious was trying to get across to me but the feelings have also "stuck" a bit now that I'm awake.

Hi,
Dreaming relates only to the sleep it happens in. It is simply a control system; it maintains or raises you level of consciousnees.
The anxiety of what dreams mean reflect your beliefs. It has more to do with your therapist causing confusion with his/her ignorance about dreams. As your therapy is part of your experience, your subconscious uses it to construct your dreams.
If you look at your dream again, you will see it is simply a waking dream, setting your brain a a bit of a puzzle to get it going!