For Absent Friends and the trolling around the Fate Chain spawn.

[Avatre]

If you are after the Field Note, you can now get this from other Skirmishes since the patch.

• For Absent Friends
• Brought to Heal
• No Camping Allowed

Just still a low, low, chance.

Also keep in mind, one will not spawn if any of the other two you can get it from is up.