Aw man I don't know if they were a townie or a random not-living-in-the-neighborhood sim but that may be why she's gone 😕
Community ManagerHey there @673047,
This Sim may have been "culled" or removed from your game. Sim culling is a performance-management mechanism- the game will automatically delete unplayed Sims or households to reduce the save game size. There is a set number of Sims you can have in your town at a time, and once that number is reached, random unplayed Sims will start to be removed from your game. Unfortunately once a Sim has been culled from your game, there is no way to get them back.
