Hello.

As subject I've this weird issue.

I've several NPCs which are unique actors.

All of them have their own house and mostly are couples.

I've properly set location for every home

I've properly set owner faction for every home, interior doors and beds.

I've properly added house keys on every NPC

I've properly set the lock list for every home.

I've properly set the persistent location on every NPC

All the NPC which are aliases used by quests are working fine.

Some other NPCs disappears.

What am I missing more?

Thank you.

* update *

What I've done (with ESM and Fake ESM):

1. I entered for at least one time in the house where NPC lives (and they are not in)

2. I exited from the house and waited for 2-3 days

3. I entered the house, I found the NPC

4. I clicked on it with the console and noted the RefID of the NPC

5. I exited the game and reloaded it

6. I coced a location

7. I used player.moveto theRefID found above

DOESN'T WORKS! THE CONSOLE DOESN'T FIND THE REFERENCE

If I do this sequence: 1,2 (sometime repeating the wait of days) and 7

IT WORKS!

WHAT THE HELL...?

* update 2 *

1. Most of the NPC are outside of their home at 8am.

2. I coced in my custom city

3. I've unlocked and entered in a home where NPC doesn't appears

4. I've exited and entered in another interior where NPC package should be active

I found my NPC!

Ok, listen to me.

As you already know, unique actors need persist location properly set when you place the NPC in interior or exterior, whatever is it.

Usually the persist location is the same location where the NPC is in.

IF YOUR NPC HAVE AI PACKAGES THAT MOVE IT BETWEEN MULTIPLE LOCATIONS AND YOU WANT TO PUBLISH YOUR MOD AS ESM DO NOT SET PERSIST LOCATION AS THE INTERIOR LOCATION WHERE NPC IS IN

You must set the "lower" parent location instead. Let me make an example.

I create myNPC unique Actor

I have his house with loc_House (his parent is loc_City)

I have a city with loc_City

I have an inn with loc_Inn (his parent is loc_City)

myNPC have these AI Packages:

BreakFastAtHome

MorningSandBoxInCity

EveningSandBoxinInn

SleepingAtHome

So the NPC is passing from these locations

BreakFastAtHome -> loc_House

MorningSandBoxInCity -> Loc_City

EveningSandBoxinInn -> Loc_Inn

SleepingAtHome -> Loc_House

The Persist Location to set is Loc_City! Otherwise the Engine WILL NOT LOAD THE NPC!

For a "vanilla example", just check the persist location of Swen.