STP-104 Merging Road Loading fix
This was caused by the model relying on a single RoadNetworkNode reference being used in the network and also in the Tile, which wasn't preserved when saving.
Closes STP-104
This was caused by the model relying on a single RoadNetworkNode reference being used in the network and also in the Tile, which wasn't preserved when saving.
Closes STP-104