I've edited the Breezehome navmesh and it won't work correctly when I load Dawnguard or Dragonborn.
It seems the game is trying to use the old Breezehome navmesh instead of mine.
Apparently many Breezehome mods have problems with the Heartfire navmesh,
but I haven't found any discussions about similar problems with Dawnguard/Dragonborn.
I can't see any changes to the Breezehome navmesh by either of them (when I open them in creation kit)
How do I get my Breezehome navmesh to work with Dawnguard/Dragonborn?
I've tried to load both of them together with my mod in creation kit, and then finalize the navmesh,
but that didn't help...