Nobby...
I don't think it is you. If you are saving the intros and endings you want in the User area using the Digital Recorder>Assembly Tab... I believe it will save only 1 set of alterations to any particular style.

Its one of those things I have tried a zillion times.... so I pick the intro and ending I use most in any style, save it...then on those few where I want a change, change it on the fly.

Eddie