When I finished the game, I went back to my last save from Polar Island to see how events would play out if I did not leave Zoë behind, since it seems it made me skip Journal entries. This save was made somewhere after that gate where you can leave her behind, but it seems that point acted as checkpoint, because I indeed ended up right there when loading the game. However, the contents of the savegame seems pretty broken:
I'm just outside the door, and yet the next part is already solved; the rocks to the north are already demolished[Edit: The bulldozer moving to destroy the rocks seems to trigger from the moment the savegame loads, so they get demolished after a while]- Zoë does not come when I open the gate. [Edit: This only happens if the bulldozer passed the gate already]
- When I go to Zoë, either by opening the door or by jumping over the wall back into the previous area where Zoë is, it triggers her dialogue, she goes into the cabin, squashes the two clones, but doesn't come out of the crane after I ride the platform.
- When I backtrack to the start of the level, the gate there is open, allowing me to walk out of the normal level bounds.