after you move an NPC (individual or move them off of the map with the sign they both work the same way) you have to wait for one of three things that will move them
- sever weather, (NPCs disappear in advert weather) when they come back they will be in the new location
- night time, (NPCs go home at night to sleep) the next morning they will be in their new location
- save and quit this will also force the NPCs to reload and they will be in their next location when you reload the save.
All in depth things like that, If you would like to watch (this is not calling you out, just an offer,) are covered in the Trailer for the map, I know the video is long but I wanted to cover everything I could in it, however, this is the most prominent thing it covers.
same video is attached to the photos section on the main itch page for the map pack! Below is the timestamp where i start showing the NPCs.
Time stamp doesnt seem to be working in the comments area here so 12:16 is the time stamp