It seems that it only happens with pre existing sims. For example, my sim got a girlfriend and I got her to move in. She had a love aspiration which I didn't really like. So I went to change it to another one but the trait from the old aspiration stayed. Which I don't like :/
About The Sims 4 Technical Issues - PC
PC players get help with their technical issues in The Sims 4 here.53,007 PostsLatest Activity: 14 minutes ago
