Elanor it has always been a fact with Sims since the beginning and according to the Devs this has not changed. Simmers tried to say it had, but it never did and why the big modders had to make a mod to do it safely. But I have often seen them tell simmers not to delete the game sims and one of the team mentioned it was still the same way and had not changed when I mentioned deleting a sim while on the beta testing group for Showtime as well. If that ever changes that will be if the EA hoods do not come populated in the base game so no sims are hardwired.
No there is no problem moving sims in Sims 3, unlike sims 2 because we technically are only moving clones of the sims in Sims 3. They are in every game in every hood after we load them to our library - so it is never a problem.
Hope that helps. sorry to rush the answers but I really have to go - I just hate to leave anyone hanging.
