Spent ages on this, probably spent longer debating whether to ask here because it's tough to explain.

So, I'm redoing The Capitol Building as an aftergame-cleanup-mod. The flow is as follows:

Fallout3.esm loads
Broken Steel loads
My mod loads

What's happening here is:

(1) In The Capitol Building there is a door that leads to the Presidential Metro, a door only available when Broken Steel is loaded. The door is near a 4-way
hall connection. Without Broken Steel the hall connection is only a 3-way.

(2) So if a user does not have BS everything looks fine as a 3-way hall connection.

(3) If a user had BS installed, they can see that new door via the 4-way hall connection that BS adds. BS manipulates that area to swap out the 3-way with a 4-way. Unfortunately, my mod comes along and overrides that 4-way with a 3-way and those with BS installed cannot access the Presidential Metro door.

Is there any way to stop my 3-way piece taking priority over the BS choice to replace with a 4-way?

Wow. Good luck translating this heh.

dont know if this is how to adres this but a script that triggers either the 3 way u have now for non bs version and a 4 way slot if u have bs loaded?

Yeah, I was thinking of trying that route.

Edit: Link removed as I'll be doing a BS and NonBS version release, since my scripting abilities
cannot figure this one out yet.

yeah - a quest script that monitors if the DLC03BS1 quest has started, then swap the area out with your own 4 way version or the BS version