Happened to me as well.
I've got the Saber Marshal's Robe with a Traditional Dramassian Silk Headgear. Which looks great ... under the hood. Without the hood it looks nothing like I want.
Fix this please!
I have the same combo and was in love with how it looks. Now it's ruined. WHY is it so hard to just put one damn button that forces an override on the hood?
Why does Bioware have to be so STUBBORN on this issue?!