Is it safe to call loadMission( ) during the game?

I am going to have triggers that load new missions.

I have been typing

loadMission("arcane.fx/data/missions/somemission.mis");

in the console.
It works, but when I quit the mission after having loaded it fully, sometimes the game crashes.

My strong suspicion is that some things are not being cleaned up in the process of changing missions.

with any NPCs I have made sure to do missionCleanup.add(%theThing) after adding anything.

So back to my question....
Is it safe to call loadMission( ) during the game?
Or should I be writing a custom function that does several other things before calling loadMission()
?