I actually assumed that the land being "Linden Right of Way" meant they were already planning on doing something with the old line. Connecting to the old line at Burns wouldn't be too difficult, were they given permission. The Right of Way runs adjacent to the old station in Burns. And then the Right of Way proceeds uninterrupted all the way to Loepa. As Que mentioned, Andraca is a bit of a road block. The Right of Way doesn't return until the other side of Andraca, in Hantu. From there, the Right of Way proceeds all the way to Elpenor before coming to an end. I assume that's where the WARR ended.
There'd be some zigs and zags to get there, and a few new railroad crossings would probably be built (I like those), but if the Lindens could find a way to deal with Andraca, they'd have all the land they need to restore the WARR line.