I am experiencing a similar issue, would you be able to tell me how you resolved it?
Thanks!
Well, I figured out that your charter's outfit should be the same in the save file that you created ("create new save file" or something like that when you save the game) and in the following ones as well (that is quicksaves, autosaves).
So, for example, I played "Witch Hunt", created a new save before talking to Morrigan in the end, then without changing anything in my character (no armor or weapon changes, etc) I talked to Morrigan, after the dialogue the game saved automaticaly. I checked BSN and I had all green checkes in my Profile Diagnostics.
Hope, this makes sence =)