patixoua It's hard to say without knowing what you might have done in the save. It could be due to Get Together not being present, or something strange could have happened with the save in the short time you were playing it, especially since you do use mods.
If you didn't spend much time on the save but like the sims you made, they should be available in your in-game library as long as you moved over the Tray files. If you DID spend some time on the save and would like to go back, you could try recovering one of the backup saves, as described here:
https://sims4.crinrict.com/eng/2014/09/recover-backup-save-game/
I spent a lot of time on said save but ill rather lose some progress than the whole save, thanks ill try it
