how to remove old id in django migrations code example
Example: how to undo makemigrations django
# The migration you want to undo is 0011_last_migration
# The migration right before it is 0010_previous_migration
python manage.py migrate my_app 0010_previous_migration
# Then you could delete the migration that you don't need (0011_last_migration) in the migration folder
# list all migration names like this
python manage.py showmigrations my_app