While working up a scenario, I have, as usual, made a new clone at each step of the way. Something strange has happened with the scenario marker of the latest clone, however. All the rest line up in a vertical column, but this latest one is located somewhere in Never-Never Land: no part of the route visible anywhere near it. Nevertheless, the route's objects take longer than usual to load in ... bits of track, trees, etc. pop in one at a time, so I'm pretty sure that the scenario marker is in the vicinity of the starting point.
So, my question is whether there is a simple way to move a scenario marker to a specific set of coordinates?