This is probably a dumb question, but I haven't found any answers in my searches. I'm trying to create path grids for NPCs in an exterior area that extends across two different cells. It seems that I'm only able to edit the path grids in one cell at a time. Is there any way that I can make path grids that cross over multiple cells?

They don't need to cross cells. Just have two beside each other on both sides of the cell border, and that should be enough for any NPC to follow.

That's more or less what I did, but I wasn't sure. Thanks for clearing it up.