We ran into the following situation last night, and couldn't really resolve it to everyone's satisfaction.

With the Staff of the Wild in their possession, the heroes travelled two trails in a week from Tamalir to Gate of the North. They chose to check for an encounter with the 3 Green icon between Greyhaven and the Gate of the North . An encounter came up and it turned out to be Lost , which reads

The party returns to the location they just left.

Now what's the "location they just left"? Is it Tamalir, the last location they actually visited? Or is it Greyhaven where they just passed through?

What's your view on this?

I would say they return to Tamalir. i.e the "Lost" means they lose 1 weeks worth of movement. Not 100% sure, and this should be added to the list of unanswered questions thread