>>56412654Honestly, I wouldn't bother unless you just really care about the post-game content. If so, yes, every full day you take to reach it loses "points" so that residents leave. It stops once you hit 12 residents. You may or may not be able to get certain items (or any at all) based on who is left. There is a way to get them back legitimately is to connect via Entralink to another game. Pain in the ass to do most of the time, so I say just use cheats to fill the city up if you want to experience it. I found this thread and these might work:
https://www.pokemongts.com/index.php?t/93741/