So I completed the graveward fight, and not the first part of blackbarrel cellars iirc, in a friends game. After beating geniviv and the subsequent sanctuary madness, I progressed all the way to guts of carnivora (where I left off with my friend). I just beat the normal play through and went to kill graveward for xp but there’s no blackbarrell cellars or floating tomb to travel to. I’m in the process of trying to talk to wainwright, clay, or running to the travel points but made this topic during.
Edit: Looks like I can through the zones. All the story stuff is unlocked, like the barrel with the key and the door in the conveyor, but I have to re-register the fast travels