Great, thanks :)

Now I'm still left what to do with the level backdrops. Are they now just in the portraits? instead of separately?

For a detailed answer, download the Update 6 UI Skinning Pack and then, run a search inside using "vitals" as keyword, copy-paste the result list in a new folder and then browse it.

Globally, it seems (I use this word because the pack is not reflecting 100 % accurately the real content of lotro client) that "good" portraits include the level backdrop icon, and "evil" ones are separated except with swarm (and of course anniversary ones when playing a monster).

Adra, in the past the vitals had always included the level backdrop (already when I started making this skin for the first time) and for some reason it was used separately too... hence I asked if they now revisited this and just went back to using 1 graphic.

As shown in the current vitals pack, concerning opponent "evil" vitals, there are actually 2 separated pics used.
Concerning good ones I didn't tested the client behaviour.
And to be honest, the more I think about it, the more I feel a bit lost too on that point ^^