As the tittle says.
If you load a savegame and immediately goes to a ongoing flight, you KSPe.IO.Save<T> code that expects the savegame to be fully detected on Flight Scenes will bork. KRAP.
This is not exactly a bug on KSPe, it's a limitation of the solution. But I registering it here so I will not forget - and perhaps I could think on a solution later?