Hey! I saw you have a problem with your year and I have a solution for you.
1. Do not change the date yet.
2. Log on to your mayor. Only one of your vilagers (or none) should have moved with any luck.
3. Enact the beautiful town ordinance. This will keep you from getting a lot of weeds when you time travel.
4. Play in 2012 (no time traveling) until someone asks to move. Tell them no, make sure they agree to stay, and save and quit.
5. Change your date on your ds clock, not on animal crossing. Go to system settings. Change the date to present day. If your clock was already present day, go up two years.
6. Make a new character on animal crossing in present day. Check to see if everyone's still there. Go into each hoise to see if someone is in boxes.
7. If it worked, power off and play as your mayor. You have saved your town!