Does anybody else sometimes change the names of premades

I don't. If they are in the game already and have a name, they keep that name. I only name Sims I put in the game or that is born in the game. I tend to play a lot of Sims and don't really want to pick names for any that already have one. LOL.

I do wonder though if I got a sim with a name I really disliked if that might prompt me to change it - but so far I don't tend to.