title: I accidentally deleted the migrations folder in Django
body: <p>I am using Django, and Postgre for the DB. So I was done with all the migrations, but then I accidentally deleted the migrations folder in my editor. So I did the 'python manage.py makemigrations' again in the terminal, hoping I can get the folder back, but it replied 'No changes detected.' What should I do to get the folder back? Is it wrong to just simply make migrations again?
  I've tried creating a new database and re-do the same process, but it still says 'No changes detected.'</p>
  
  <p>I very much appreciate your help. :)</p>