Here is a slightly long, rambling post I made in a different thread about Valeera’s companion abilities interface panel being replaced with Brann’s after the 11/18 patch. I know it is more in the area of “bugs”, but maybe the information is helpful:
When I first logged into my level 90 shaman on the Beta yesterday (11/18) after the patch, it appeared Valeera didn’t have a spec selected. I play heals, so I have set my companion to tank. When I opened the interface to make sure she was still set as tank, the interface for Brann and his abilities came up instead. I selected tank for him. The character was copied from my shaman on live, so the panel showed Brann at level 100. Both of the curio slots had the same curios as on live. During the delve (I believe it was Shadowguard Point in Voidstorm), Valeera didn’t use any of her abilities, and instead was clearly using Brann’s abilities. I even occasionally heard Brann say his voice line, “I’m gonna go all out!”
After doing the delve, I noticed I was no longer receiving any coffer key shards, from any source at all (and I’m not capped for the week, I’m at 102/600). I also noticed none of the delves showed as bountiful.
Moreover, another bug appeared after I re-copied my account data (I did this because my character did not have access to most of the transmog I have on live). This re-copying of account data reset all of my flight points and a bunch of quests, and it apparently got rid of all companion curios. The next delve I did (I forget which one), when I opened the companion abilities pane, it still showed Brann, but he had no curios at all, and both slots now show as “locked.” When I received “new” curios at the end of the delve, the quests I’d already completed to install my “first” curious popped up again (quest names: (1) Ancient Curiosity: Utility & (2) Ancient Curiosity: Combat), but I cannot complete them because Brann’s curio interfaces are locked.
I tested another character, and it appears the above-listed bugs are warbound-wide. One last note: looking at my “Journeys” tab, when I click on “Delves: Season 1”, it gives me a “Journey Locked” message, and when I hover over the greyed-out “Configure” button where it looks like my companion’s portrait should be, there is a message in red text that reads, “Unlocks with the quest ‘Delve into the Earth’ in the Isle of Dorn campaign.” (I completed that quest during TWW.