Just for the heck of it, I've been trying to turn Soul Cairn into it's own independent world space (as a prequel to creating my own worldspace, to work out details), and have run into some issues...

1) Where you are in the Soul Cairn doesn't actually seem to match up on the map, which thinks you're still in Tamriel even though you're -not in Tamriel-.
2) All the nice pointers to quests in Tamriel are scattered all over the Soul Cairn. Is there some way to hide Tamriel quest pointers when you're not actually in Tamriel? This could be a big issue if a mod wants to have a parallel, independent world...

I'll keep on tinkering while I have a chance, but if anyone here has played around with creating an independent world space with it's own set of quest pointers and locations, please feel free to comment. ^^

... are is the Soul Cairn somehow flagged as interior somewhere or something? ... If not, I have no clue as to how to give them proper maps as of yet...

What is "Soul Cairn"?? Is it a cell? What is the name of the cell (in the Cell View Window)??

Usually, when you get the marker issue, it is because you are inside an Interior with an incorrect Location (or incorrect parent)

Let me know on the couple of questions and I'll check it out.

Soul Cairn is an independant world space, labeled "DLCSoulCairn" in the dropdown menu in the cell window where you change from Tamrial to Interior ect.

You could alter the entire thing and mark them ad interior cells, thus forcing the quest markers to point to the only exit out of the place, while keeping relevant markers inside. How you would go about doing that, I have no idea :S

Ah, then it is part of DawnGuard?? (and if it is in the drop down box, it already is it's own Worldspace?? So I'm a bit confused what Gorun is trying to do???)

And I don't have DawnGuard, so I can't really help.

But ... There is probably an issue with Locations made in the original cells and what has happened when the cells have been edited (turned into a new world space).

I THINK the locations would need removing and new ones making for a new world (and/or the parents of any location in that "Worldspace")

*tinkering* Apparently, removing Tamriel as a parent world does not fix things, although it does reveal the landscape of Soul Cairn as the world map when you look at the map. Unfortunately, it's still splattered with quest markers from Tamriel, and the player position displayed is also that of on the Tamriel map, despite my removing Tamriel as a parent worldspace. (i.e. way up in the corner off the Soul Cairn land area instead of where it's supposed to be). At this point, I have Soul Cairn displaying and clipped roughly at the relevant borders, but the player marker is way off the map to the northwest and Tamriel quest markers are all over it.

I think the problem is that I think it IS considered an internal space in Tamriel somehow, which is why it puts the player / quest positioning where it does, and that changing this setting takes more than just unparenting the Soul Cairn worldspace to fix... unless Bethesda in it's wisdom hardcoded quest markers and player location relative to Tamriel? It might be that it's impossible to create a fully featured separate world map other than Tamriel... but I hope not.

I'm going to tinker more on this next week, and if I have any success whatsoever I'll be sure to post it here. ^^

Edit: It would really svck to be forced to only have the local map available for custom worldspaces...

Edit 2: ... or there could be some other mechanism involved. I guess I'm going to be searching through a lot of stuff to figure this thing out. Maybe regions are involved...?