Change map with area...

[richm0nkey]

Instead of using OnStart() to add the collide callback try using OnEnter() to see if it is because of a game save.

Make sure there are no game saves that are being loaded before testing the map. Press the start button on the custom story menu instead of continue.

Not sure if using continue after saving progress on a map Nullifies any functions under the OnStart() part of scripts but its worth a shot.