Toomanycats, feeling this way now very much fits in with what you said earlier. You may not "switch" between identity states but it seems like you "switch" between feeling and knowing states.
Not much different to what I experience but when "I" switch between feeling and knowing states each state has a separate and enduring perception of self (different to the others). Like I am ME but I am not them. They are Sam, Jess, P. and B etc.
In the last few weeks our part who feels like you feel now (No this isn't right I got it all wrong) has been going to therapy and telling T that she doesn't have DID and she doesn't switch and there really truly are no other parts at all and she would like to cancel all future appointments because she really doesn't need therapy, it was all just a mistake and she probably just did it to get attention. T says to her "Mmm, it doesn't seem like you got much attention from this because you don't talk about it with anyone, so that doesn't seem to make much sense" and "Does everyone inside feel the same way? Can we check in with the others about that?"
Toomanycats I wonder if you could observe how long you feel this way about it and notice how when and why it changes to something else. It might give you some useful information about why this is happening for you.